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ISO6721BD

Texas InstrumentsExtended

-40℃~+125℃ 1 1 11ns 150kV/us 3000 50Mbps High Level SOIC-8 Digital Isolators ROHS

Part id
ti/ISO6721BD
Category
Digital Isolators
Package
SOIC-8
Pins
8
In stock
7,076 at JLCPCB (C5216430)
Used on
3 open-source boards

Overview

The ISO6721BD is a digital Isolator made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+125℃ 1 1 11ns 150kV/us 3000 50Mbps High Level SOIC-8 Digital Isolators ROHS.

PCBKit's library has its KiCad symbol (Isolator:ISO6721BD, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 7,076 are in stock at JLCPCB (part C5216430). 3 open-source boards in 2 repositories on GitHub use it.

Symbol

1VCC12OUTA3INB4GND15GND26OUTB7INA8VCC2
Isolator:ISO6721BDFrom KiCad's library

Footprint

12345678
Package_SO:SOIC-8_3.9x4.9mm_P1.27mmFrom KiCad's library

From the datasheet

21
Supply, least
1.71 V · VCC1, recommended operating minimum, 1.8 V operation · p. 6
Supply, most
1.89 V · VCC1, recommended operating maximum, 1.8 V operation · p. 6
Supply, least
2.25 V · VCC1, recommended operating minimum, 2.5 V to 5 V operation · p. 6
Supply, most
5.5 V · VCC1, recommended operating maximum, 2.5 V to 5 V operation · p. 6
Supply, absolute maximum
6 V · VCC1 to GND1, absolute maximum · p. 5
Works from
-40 °C · Ambient temperature minimum · p. 6
Works up to
125 °C · Ambient temperature maximum · p. 6
Junction, hottest
150 °C · Operating junction temperature maximum · p. 5
A pin gives at most
15 mA · Output current absolute maximum magnitude · p. 5
Takes working
3.8 mA · sum of ICC1 and ICC2 typical, 5 V, 1 Mbps, CL = 15 pF · p. 12
Takes at most
13.4 mA · sum of ICC1 and ICC2 maximum, 5 V, 50 Mbps, CL = 15 pF · p. 12
Junction to air (D (SOIC))
104.6 K/W · Junction-to-ambient thermal resistance · p. 7
Junction to case (D (SOIC))
48.9 K/W · Junction-to-case (top) thermal resistance · p. 7
Junction to board (D (SOIC))
52.9 K/W · Junction-to-board thermal resistance · p. 7
Data rate, most
50 Mbit/s · Data rate maximum · p. 6
Takes working
4.6 mA · sum of ICC1 and ICC2, typical, 3.3 V, 10 Mbps, all channels switching, CL = 15 pF · p. 14
Takes at most
11 mA · sum of ICC1 and ICC2, max, 3.3 V, 50 Mbps, CL = 15 pF; largest provided · p. 14
Edge
2.6 ns · typical output rise time, 5-V supply · p. 20
Edge
1.6 ns · typical output rise time, 3.3-V supply · p. 20
Edge
2 ns · typical output rise time, 2.5-V supply · p. 21
Edge
2.7 ns · typical output rise time, 1.8-V supply · p. 21

What it is and has

16
Data rate
50 Mbps · p. 1
Package
Narrow-SOIC (D-8) · p. 1
Propagation delay
11 ns typical · p. 1
Common mode transient immunity
±150 kV/μs typical · p. 1
Isolation rating
Up to 3000 VRMS · p. 1
Working voltage
450 VRMS · p. 1
Level translation
1.71 V to 5.5 V · p. 1
Certification
DIN EN IEC 60747-17 (VDE 0884-17) · p. 1
Certification
UL 1577 component recognition program · p. 1
Certification
IEC 62368-1, IEC 61010-1, IEC 60601-1 · p. 1
Certification
GB 4943.1 · p. 1
Channels
2; 1 Forward, 1 Reverse · p. 27
Default output state
High · p. 27
Package
D-8 · p. 27
Rated isolation
3000 VRMS / 4242 VPK · p. 27
Protection
ESD protection for input and output signal pins and inter-chip bond pads · p. 27

Around it

2
cap 0.1 µF
between VCC1 and GND1; Decoupling capacitor; circuit hook-up specifies 2 mm maximum from VCC1. · p. 31
cap 0.1 µF
between VCC2 and GND2; Decoupling capacitor; circuit hook-up specifies 2 mm maximum from VCC2. · p. 31

Specifications

141
ParameterConditionsAs printedPage
Supply Voltage (2)VCC1 to GND1min -0.5 · max 6 V5
Supply Voltage (2)VCC2 to GND2min -0.5 · max 6 V5
Input/Output VoltageINx to GNDx; maximum VCCX + 0.5 V, not exceeding 6 Vmin -0.5 V5
Input/Output VoltageOUTx to GNDx; maximum VCCX + 0.5 V, not exceeding 6 Vmin -0.5 V5
Output Current Iomin -15 · max 15 mA5
Operating junction temperature TJmax 150 °C5
Storage temperature Tstgmin -65 · max 150 °C5
Electrostatic discharge V(ESD)Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins; ±6000 Vmax 6000 V5
Electrostatic discharge V(ESD)Charged device model (CDM), per JEDEC specification JESD22-C101, all pins; ±1500 Vmax 1500 V5
Electrostatic discharge V(ESD)Contact discharge per IEC 61000-4-2; isolation barrier withstand test; ±8000 Vmax 8000 V5
Supply Voltage Side 1 VCC1VCC = 1.8 Vmin 1.71 · max 1.89 V6
Supply Voltage Side 1 VCC1VCC = 2.5 V to 5 Vmin 2.25 · max 5.5 V6
Supply Voltage Side 2 VCC2VCC = 1.8 Vmin 1.71 · max 1.89 V6
Supply Voltage Side 2 VCC2VCC = 2.5 V to 5 Vmin 2.25 · max 5.5 V6
UVLO threshold when supply voltage is rising VCC(UVLO+)typ 1.53 · max 1.71 V6
UVLO threshold when supply voltage is falling VCC(UVLO-)min 1.1 · typ 1.41 V6
Supply voltage UVLO hysteresis Vhys(UVLO)min 0.08 · typ 0.13 V6
Low level Input voltage VILMaximum 0.3 x VCCImin 0 V6
High level output current IOHVCCO = 5 Vmin -4 mA6
High level output current IOHVCCO = 3.3 Vmin -2 mA6
High level output current IOHVCCO = 2.5 Vmin -1 mA6
High level output current IOHVCCO = 1.8 Vmin -1 mA6
Low level output current IOLVCCO = 5 Vmax 4 mA6
Low level output current IOLVCCO = 3.3 Vmax 2 mA6
Low level output current IOLVCCO = 2.5 Vmax 1 mA6
Low level output current IOLVCCO = 1.8 Vmax 1 mA6
Data Rate DRmin 0 · max 50 Mbps6
Ambient temperature TANominal 25 °Cmin -40 · max 125 °C6
Junction-to-ambient thermal resistance RθJAISO672xB; D (SOIC), 8 PINStyp 104.6 °C/W7
Junction-to-case (top) thermal resistance RθJC(top)ISO672xB; D (SOIC), 8 PINStyp 48.9 °C/W7
Junction-to-board thermal resistance RθJBISO672xB; D (SOIC), 8 PINStyp 52.9 °C/W7
Junction-to-top characterization parameter ψJTISO672xB; D (SOIC), 8 PINStyp 7.9 °C/W7
Junction-to-board characterization parameter ψJBISO672xB; D (SOIC), 8 PINStyp 52.1 °C/W7
Maximum power dissipation (both sides) PDISO6721B; VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, input a 25-MHz 50% duty cycle square wavemax 73 mW7
Maximum power dissipation (side-1) PD1ISO6721B; VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, input a 25-MHz 50% duty cycle square wavemax 37 mW7
Maximum power dissipation (side-2) PD2ISO6721B; VCC1 = VCC2 = 5.5 V, TJ = 150°C, CL = 15 pF, input a 25-MHz 50% duty cycle square wavemax 37 mW7
External clearance(1) CLR8-D; side 1 to side 2 distance through air; >4 mmmin 4 mm8
External creepage(1) CPG8-D; side 1 to side 2 distance across package surface; >4 mmmin 4 mm8
Distance through the insulation DTI8-D; minimum internal gap (internal clearance); >17 ummin 17 um8
Comparative tracking index CTI8-D; IEC 60112; UL 746A; >400 Vmin 400 V8
Maximum repetitive peak isolation voltage VIORM8-D; AC voltage (bipolar)max 637 VPK8
Maximum isolation working voltage VIOWM8-D; AC voltage (sine wave); time-dependent dielectric breakdown (TDDB) test; see Figure 9-8max 450 VRMS8
Maximum isolation working voltage VIOWM8-D; DC voltagemax 637 VDC8
Maximum transient isolation voltage VIOTM8-D; VTEST = VIOTM, t = 60 s (qualification); VTEST = 1.2 × VIOTM, t = 1 s (100% production)max 4242 VPK8
Maximum impulse voltage(3) VIMP8-D; tested in air, 1.2/50-us waveform per IEC 62368-1max 5000 VPK8
Maximum surge isolation voltage(4) VIOSM8-D; VIOSM ≥ 1.3 x VIMP; tested in oil (qualification test), 1.2/50-us waveform per IEC 62368-1max 6500 VPK8
Apparent charge(5) qpd8-D; Method a: after I/O safety test subgroup 2/3, Vini = VIOTM, tini = 60 s; Vpd(m) = 1.2 × VIORM, tm = 10 smax 5 pC8
Apparent charge(5) qpd8-D; Method a: after environmental tests subgroup 1, Vini = VIOTM, tini = 60 s; Vpd(m) = 1.3 × VIORM, tm = 10 smax 5 pC8
Apparent charge(5) qpd8-D; Method b: routine test (100% production) and preconditioning (type test); Vini = 1.2 x VIOTM, tini = 1 s; Vpd(m) = 1.5 x VIORM, tm = 1 s (method b1) or Vpd(m) = Vini, tm = tini (method b2)max 5 pC8
Barrier capacitance, input to output(6) CIO8-D; VIO = 0.4 × sin (2 πft), f = 1 MHz; approximately 0.5 pFtyp 0.5 pF8
Withstand isolation voltage VISO8-D; UL 1577; VTEST = VISO, t = 60 s (qualification); VTEST = 1.2 × VISO, t = 1 s (100% production)max 3000 VRMS8
Safety input, output, or supply current (1) ISD-8 PACKAGE - ISO672xB; RθJA = 104.6°C/W, VI = 5.5 V, TJ = 150°C, TA = 25°Cmax 217.2 mA10
Safety input, output, or supply current (1) ISD-8 PACKAGE - ISO672xB; RθJA = 104.6°C/W, VI = 3.6 V, TJ = 150°C, TA = 25°Cmax 332 mA10
Safety input, output, or supply current (1) ISD-8 PACKAGE - ISO672xB; RθJA = 104.6°C/W, VI = 2.75 V, TJ = 150°C, TA = 25°Cmax 434.5 mA10
Safety input, output, or supply current (1) ISD-8 PACKAGE - ISO672xB; RθJA = 104.6°C/W, VI = 1.89 V, TJ = 150°C, TA = 25°Cmax 628.9 mA10
Safety input, output, or total power (1) PSD-8 PACKAGE - ISO672xB; RθJA = 104.6°C/W, TJ = 150°C, TA = 25°Cmax 1195 mW10
Maximum safety temperature (1) TSD-8 PACKAGE - ISO672xBmax 150 °C10
Low-level output voltage VOLVCC1 = VCC2 = 5 V ± 10%; IOL = 4 mAmax 0.4 V12
High-level input current IIHVCC1 = VCC2 = 5 V ± 10%; VIH = VCCI at INxmax 10 uA12
Low-level input current IILVCC1 = VCC2 = 5 V ± 10%; VIL = 0 V at INxmin -10 uA12
Common mode transient immunity CMTIVCC1 = VCC2 = 5 V ± 10%; VI = VCC or 0 V, VCM = 1200 Vmin 100 · typ 150 kV/us12
Input Capacitance (2) CiVI = VCC/2 + 0.4×sin(2πft), f = 2 MHz, VCC = 5 V; measured from input pin to same side groundtyp 2.8 pF12
Supply current - DC signal (2) ICC1, ICC2ISO6721B; each supply; VCC1 = VCC2 = 5 V ± 10%; VI = VCCItyp 1.2 · max 2.1 mA12
Supply current - DC signal (2) ICC1, ICC2ISO6721B; each supply; VCC1 = VCC2 = 5 V ± 10%; VI = 0 Vtyp 2.3 · max 3.5 mA12
Supply current - AC signal (3) ICC1, ICC2ISO6721B; each supply; VCC1 = VCC2 = 5 V ± 10%; all channels switching with square wave clock input; CL = 15 pF; 1 Mbpstyp 1.9 · max 2.9 mA12
Supply current - AC signal (3) ICC1, ICC2ISO6721B; each supply; VCC1 = VCC2 = 5 V ± 10%; all channels switching with square wave clock input; CL = 15 pF; 10 Mbpstyp 2.5 · max 3.6 mA12
Supply current - AC signal (3) ICC1, ICC2ISO6721B; each supply; VCC1 = VCC2 = 5 V ± 10%; all channels switching with square wave clock input; CL = 15 pF; 50 Mbpstyp 5.2 · max 6.7 mA12
Low-level output voltage VOLVCC1 = VCC2 = 3.3 V ± 10%; IOL = 2mA; See Figure 7-1max 0.2 V14
High-level input current IIHVCC1 = VCC2 = 3.3 V ± 10%; VIH = VCCI at INxmax 10 uA14
Low-level input current IILVCC1 = VCC2 = 3.3 V ± 10%; VIL = 0 V at INxmin -10 uA14
Common mode transient immunity CMTIVCC1 = VCC2 = 3.3 V ± 10%; VI = VCC or 0 V, VCM = 1200 Vmin 100 · typ 150 kV/us14
Input Capacitance CiVI = VCC/ 2 + 0.4×sin(2πft), f = 2 MHz, VCC = 3.3 V; measured from input pin to same side ground; See Figure 7-3typ 2.8 pF14
Supply current - DC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 3.3 V ± 10%; VI = VCCI; each supplytyp 1.2 · max 2.1 mA14
Supply current - DC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 3.3 V ± 10%; VI = 0 V; each supplytyp 2.3 · max 3.5 mA14
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 3.3 V ± 10%; 1 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 1.8 · max 2.8 mA14
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 3.3 V ± 10%; 10 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 2.3 · max 3.3 mA14
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 3.3 V ± 10%; 50 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 4.2 · max 5.5 mA14
Low-level output voltage VOLVCC1 = VCC2 = 2.5 V ± 10%; IOL = 1mA; See Figure 7-1max 0.1 V16
High-level input current IIHVCC1 = VCC2 = 2.5 V ± 10%; VIH = VCCI at INxmax 10 uA16
Low-level input current IILVCC1 = VCC2 = 2.5 V ± 10%; VIL = 0 V at INxmin -10 uA16
Common mode transient immunity CMTIVCC1 = VCC2 = 2.5 V ± 10%; VI = VCC or 0 V, VCM = 1200 Vmin 100 · typ 150 kV/us16
Input Capacitance CiVI = VCC/ 2 + 0.4×sin(2πft), f = 2 MHz, VCC = 2.5 V; measured from input pin to same side ground; See Figure 7-3typ 2.8 pF16
Supply current - DC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 2.5 V ± 10%; VI = VCCI; each supplytyp 1.2 · max 2.1 mA16
Supply current - DC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 2.5 V ± 10%; VI = 0 V; each supplytyp 2.3 · max 3.5 mA16
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 2.5 V ± 10%; 1 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 1.8 · max 2.8 mA16
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 2.5 V ± 10%; 10 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 2.1 · max 3.2 mA16
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 2.5 V ± 10%; 50 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 3.6 · max 4.9 mA16
Low-level output voltage VOLVCC1 = VCC2 = 1.8 V ± 5%; IOL = 1mA; See Figure 7-1max 0.1 V18
High-level input current IIHVCC1 = VCC2 = 1.8 V ± 5%; VIH = VCCI at INxmax 10 uA18
Low-level input current IILVCC1 = VCC2 = 1.8 V ± 5%; VIL = 0 V at INxmin -10 uA18
Common mode transient immunity CMTIVCC1 = VCC2 = 1.8 V ± 5%; VI = VCC or 0 V, VCM = 1200 Vmin 100 · typ 150 kV/us18
Input Capacitance CiVI = VCC/ 2 + 0.4×sin(2πft), f = 2 MHz, VCC = 1.8 V; measured from input pin to same side ground; See Figure 7-3typ 2.8 pF18
Supply current - DC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 1.8 V ± 5%; VI = VCCI; each supplytyp 1.1 · max 2 mA18
Supply current - DC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 1.8 V ± 5%; VI = 0 V; each supplytyp 2.1 · max 3.4 mA18
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 1.8 V ± 5%; 1 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 1.6 · max 2.7 mA18
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 1.8 V ± 5%; 10 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 1.9 · max 3 mA18
Supply current - AC signal ICC1, ICC2ISO6721B; VCC1 = VCC2 = 1.8 V ± 5%; 50 Mbps; all channels switching with square wave clock input; CL = 15 pF; each supplytyp 3 · max 4.2 mA18
Propagation delay time tPLH, tPHLVCC1 = VCC2 = 5 V ± 10%; See Figure 7-1typ 11 · max 18 ns20
Propagation delay drift tP(dft)VCC1 = VCC2 = 5 V ± 10%typ 8 ps/℃20
Minimum pulse width tUIVCC1 = VCC2 = 5 V ± 10%; See Figure 7-1min 20 ns20
Pulse width distortion(1) |tPHL – tPLH| PWDVCC1 = VCC2 = 5 V ± 10%; See Figure 7-1typ 0.2 · max 7 ns20
Channel-to-channel output skew time tsk(o)VCC1 = VCC2 = 5 V ± 10%; Same direction channelsmax 6 ns20
Part-to-part skew time tsk(p-p)VCC1 = VCC2 = 5 V ± 10%; identical supply voltages, temperature, input signals and loadsmax 6 ns20
Output signal rise time trVCC1 = VCC2 = 5 V ± 10%; See Figure 7-1typ 2.6 · max 4.5 ns20
Output signal fall time tfVCC1 = VCC2 = 5 V ± 10%; See Figure 7-1typ 2.6 · max 4.5 ns20
Time from UVLO to valid output data tPUVCC1 = VCC2 = 5 V ± 10%max 300 us20
Default output delay time from input power loss tDOVCC1 = VCC2 = 5 V ± 10%; measured from the time VCC goes below 1.2V; See Figure 7-2typ 0.1 · max 0.3 us20
Time interval error tieVCC1 = VCC2 = 5 V ± 10%; 216 – 1 PRBS data at 50 Mbpstyp 1 ns20
Propagation delay time tPLH, tPHLVCC1 = VCC2 = 3.3 V ± 10%; See Figure 7-1typ 11 · max 18 ns20
Propagation delay drift tP(dft)VCC1 = VCC2 = 3.3 V ± 10%typ 9.2 ps/℃20
Minimum pulse width tUIVCC1 = VCC2 = 3.3 V ± 10%; See Figure 7-1min 20 ns20
Pulse width distortion(1) |tPHL – tPLH| PWDVCC1 = VCC2 = 3.3 V ± 10%; See Figure 7-1typ 0.5 · max 7 ns20
Channel-to-channel output skew time tsk(o)VCC1 = VCC2 = 3.3 V ± 10%; Same direction channelsmax 6 ns20
Part-to-part skew time tsk(p-p)VCC1 = VCC2 = 3.3 V ± 10%; identical supply voltages, temperature, input signals and loadsmax 6 ns20
Output signal rise time trVCC1 = VCC2 = 3.3 V ± 10%; See Figure 7-1typ 1.6 · max 3.2 ns20
Output signal fall time tfVCC1 = VCC2 = 3.3 V ± 10%; See Figure 7-1typ 1.6 · max 3.2 ns20
Time from UVLO to valid output data tPUVCC1 = VCC2 = 3.3 V ± 10%max 300 us20
Default output delay time from input power loss tDOVCC1 = VCC2 = 3.3 V ± 10%; measured from the time VCC goes below 1.2V; See Figure 7-2typ 0.1 · max 0.3 us20
Time interval error tieVCC1 = VCC2 = 3.3 V ± 10%; 216 – 1 PRBS data at 50 Mbpstyp 1 ns20
Propagation delay time tPLH, tPHLVCC1 = VCC2 = 2.5 V ± 10%; See Figure 7-1typ 12 · max 20.5 ns21
Propagation delay drift tP(dft)VCC1 = VCC2 = 2.5 V ± 10%typ 14.3 ps/℃21
Minimum pulse width tUIVCC1 = VCC2 = 2.5 V ± 10%; See Figure 7-1min 20 ns21
Pulse width distortion(1) |tPHL – tPLH| PWDVCC1 = VCC2 = 2.5 V ± 10%; See Figure 7-1typ 0.6 · max 7.1 ns21
Channel-to-channel output skew time tsk(o)VCC1 = VCC2 = 2.5 V ± 10%; Same direction channelsmax 6 ns21
Part-to-part skew time tsk(p-p)VCC1 = VCC2 = 2.5 V ± 10%; identical supply voltages, temperature, input signals and loadsmax 6.1 ns21
Output signal rise time trVCC1 = VCC2 = 2.5 V ± 10%; See Figure 7-1typ 2 · max 4 ns21
Output signal fall time tfVCC1 = VCC2 = 2.5 V ± 10%; See Figure 7-1typ 2 · max 4 ns21
Time from UVLO to valid output data tPUVCC1 = VCC2 = 2.5 V ± 10%max 300 us21
Default output delay time from input power loss tDOVCC1 = VCC2 = 2.5 V ± 10%; measured from the time VCC goes below 1.2V; See Figure 7-2typ 0.1 · max 0.3 us21
Time interval error tieVCC1 = VCC2 = 2.5 V ± 10%; 216 – 1 PRBS data at 50 Mbpstyp 1 ns21
Propagation delay time tPLH, tPHLVCC1 = VCC2 = 1.8 V ± 5%; See Figure 7-1typ 15 · max 24 ns21
Propagation delay drift tP(dft)VCC1 = VCC2 = 1.8 V ± 5%typ 15.2 ps/℃21
Minimum pulse width tUIVCC1 = VCC2 = 1.8 V ± 5%; See Figure 7-1min 20 ns21
Pulse width distortion(1) |tPHL – tPLH| PWDVCC1 = VCC2 = 1.8 V ± 5%; See Figure 7-1typ 0.7 · max 8.2 ns21
Channel-to-channel output skew time tsk(o)VCC1 = VCC2 = 1.8 V ± 5%; Same direction channelsmax 6 ns21
Part-to-part skew time tsk(p-p)VCC1 = VCC2 = 1.8 V ± 5%; identical supply voltages, temperature, input signals and loadsmax 8.8 ns21
Output signal rise time trVCC1 = VCC2 = 1.8 V ± 5%; See Figure 7-1typ 2.7 · max 5.3 ns21
Output signal fall time tfVCC1 = VCC2 = 1.8 V ± 5%; See Figure 7-1typ 2.7 · max 5.3 ns21
Time from UVLO to valid output data tPUVCC1 = VCC2 = 1.8 V ± 5%max 300 us21
Default output delay time from input power loss tDOVCC1 = VCC2 = 1.8 V ± 5%; measured from the time VCC goes below 1.2V; See Figure 7-2typ 0.1 · max 0.3 us21
Time interval error tieVCC1 = VCC2 = 1.8 V ± 5%; 216 – 1 PRBS data at 50 Mbpstyp 1 ns21

Pins, by the datasheet

8
1 VCC1
Power supply, VCC1. · p. 4
2 OUTA
Output, channel A. · p. 4
3 INB
Input, channel B. · p. 4
4 GND1
Ground connection for VCC1. · p. 4
5 GND2
Ground connection for VCC2. · p. 4
6 OUTB
Output, channel B. · p. 4
7 INA
Input, channel A. · p. 4
8 VCC2
Power supply, VCC2. · p. 4

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Parts like it

8

Questions

Is there a KiCad symbol and footprint for the ISO6721BD?

Yes. The symbol is Isolator:ISO6721BD and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the ISO6721BD?

SOIC-8, with 8 pins. Its footprint is drawn on this page.

Where is the ISO6721BD datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the ISO6721BD?

JLCPCB lists it as part C5216430, with 7,076 in stock; the sellers' links on this page open their listings.

What can replace the ISO6721BD?

Parts like it in the library: the ADUM1201ARZ-RL7 by Analog Devices, the CA-IS3720HS by Chipanalog, the CA-IS3721HS by Chipanalog and the ISO7721D by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the ISO6721BD?

3 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.