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ST490ABDR on a board, in 3D

ST490ABDR

STMicroelectronics

-40℃~+85℃ 1 1 25Mbps 4.5V~5.5V 5mA Full-Duplex Transceiver ±4kV SOIC-8 RS-485 / RS-422 ICs ROHS

Extended
DatasheetJLCPCBLCSCst/ST490ABDR
Category
RS 485 , RS 422 ICs
Package
SOIC-8
Pins
8

Overview

The ST490ABDR is a RS 485 , RS 422 IC made by STMicroelectronics in a SOIC-8 package with 8 pins. -40℃~+85℃ 1 1 25Mbps 4.5V~5.5V 5mA Full-Duplex Transceiver ±4kV SOIC-8 RS-485 / RS-422 ICs ROHS.

PCBKit's library has its KiCad symbol (EasyEDA_Cloud:MAX490EESA-TUDI, from EasyEDA) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. 588 are in stock at JLCPCB (part C155672). 4 open-source boards in 2 repositories on GitHub use it.

Symbol

VCC1R2D3GND4Y5Z6B7A8
EasyEDA_Cloud:MAX490EESA-TUDIFrom EasyEDA

Footprint

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

From the datasheet

8
Supply, least
4.5 V · VCC, operating min · p. 6
Supply, most
5.5 V · VCC, operating max · p. 6
Supply, absolute maximum
7 V · VCC, absolute max · p. 5
Works from
-40 °C · Ambient operating min · p. 6
Works up to
85 °C · Ambient operating max · p. 6
Takes working
2 mA · VCC, no load supply current, typical · p. 6
Data rate, most
25 Mbit/s · Rated operation · p. 1
Edge
8 ns · Driver differential rise or fall time, typical, RL = 54 Ω, CL1 = CL2 = 50 pF · p. 7

What it is and has

6
Common mode input voltage range
-7 V to 12 V · p. 1
Input hysteresis
70 mV typical · p. 1
Data rate
25 Mbps · p. 1
Supply
Single 5 V · p. 1
ESD protection
±4 kV · p. 1
Protection
Current limiting and thermal shutdown · p. 1

Specifications

35
ParameterConditionsAs printedPage
Supply voltage VCCmax 7 V5
Driver input voltage VDImin -0.5 · max 7 V5
Driver output voltage VY, VZmin -7.5 · max 12.5 V5
Receiver input voltage VA, VBmin -7.5 · max 12.5 V5
Receiver output voltage VROUpper limit is VCC + 0.3 Vmin -0.3 V5
Human body model ESDmax 3.5 kV5
No load supply current ISUPPLYVCC = 4.5 V to 5.5 V, TA = -40 to 85 °C; typical at TA = 25 °Ctyp 2 · max 5 mA6
Input capacitance CINVCC = 4.5 V to 5.5 V; typical at TA = 25 °Ctyp 1.8 pF6
Driver output capacitance CYZVCC = 4.5 V to 5.5 V; typical at TA = 25 °Ctyp 1.2 pF6
Output capacitance COUTVCC = 4.5 V to 5.5 V; typical at TA = 25 °Ctyp 2.3 pF6
Differential drive output (with load) VOD2RL= 54Ω (RS-422) (Figure 1)min 1.5 · typ 2.6 · max 5 V6
Differential drive output (with load) VOD3RL= 100Ω (RS-422) (Figure 1)min 2 · typ 3 V6
Change in magnitude of driver differential output voltage for complementary output states ΔVODRL= 54Ω or 100Ω (Figure 1)typ 0 · max 0.2 V6
Driver common mode output voltage VOCRL= 54Ω (Figure 1)min 1 · max 3 V6
Change in magnitude of driver common mode output voltage ΔVOCRL= 54Ω (Figure 1)typ 0 · max 0.2 V6
Power off output current IOFFVCC = 0V, VO=-7V to 12V; maximum magnitude, printed ± 100max 100 uA6
Driver short circuit output current IOSDVO=-7V to 12V; current magnitudes, printed ± 35 and ± 250min 35 · max 250 mA6
Input logic threshold low VILmax 0.8 V6
Input logic threshold high VIHmin 2 V6
Logic input current IIN1Maximum magnitude, printed ± 2.0max 2 uA7
Input current (A, B) IIN2Other input=0V, VCC= 0 or 5.25V, VIN=12Vtyp 0.5 · max 1 mA7
Input current (A, B) IIN2Other input=0V, VCC= 0 or 5.25V, VIN=-7Vtyp -0.35 · max -0.8 mA7
Receiver differential threshold voltage VTHVCM = -7V to 12Vmin -0.2 · max 0.2 V7
Receiver input hysteresis ΔVTHVCM = 0Vtyp 70 mV7
Receiver output high voltage VOHIOUT = -8mA, VID = 200mVmin 3.5 · typ 4.7 V7
Receiver output low voltage VOLIOUT = 8mA, VID = -200mVtyp 0.2 · max 0.4 V7
Receiver input resistance RRINVCM = -7V to 12Vmin 12 · typ 24 kΩ7
Receiver short-circuit current IOSRVO = 0V to VCCmin 7 · max 95 mA7
Maximum data rate DRJitter <5%min 25 · typ 50 Mbps7
Propagation delay input to output tPLH, tPHLRL= 54Ω, CL1=CL2=50pF, (Figure 1)typ 10 · max 16 ns7
Differential output delay skew tSKEWRL= 54Ω, CL1=CL2=50pF, (Figure 1)typ 1 · max 3 ns7
Rise or fall differential time tTLH, tTHLRL= 54Ω, CL1=CL2=50pF, (Figure 1)typ 8 · max 12 ns7
Propagation delay input to output tPLH, tPHLCL = 15pF, (Figure 2, Figure 4)typ 19 · max 30 ns7
|tPLH - tPHL| Receiver output skew tSKDCL = 15pF, (Figure 2, Figure 4)typ 1 · max 3 ns7
Rise or fall time tTLH, tTHLCL = 15pF, (Figure 2, Figure 4)typ 8 ns7

Pins, by the datasheet

8
1 VCC
Supply voltage · p. 3
2 RO
Receiver output · p. 3
3 DI
Driver input · p. 3
4 GND
Ground · p. 3
5 Y
Non-inverting driver output · p. 3
6 Z
Inverting driver output · p. 3
7 B
Inverting receiver input · p. 3
8 A
Non-inverting receiver input · p. 3

Ordering codes, by the datasheet

2
ST490ABN
DIP-8 · -40 to 85 °C; 50 parts per tube / 40 tube per box · p. 1
ST490ABDR
SO-8 (tape and reel) · -40 to 85 °C; 2500 parts per reel · p. 1

Parameters

13
Communication Mode
Full-Duplex
Current - Supply
2mA
Data Rate
25Mbps
ESD Protect
±4kV
Features
Overcurrent Protection
Number of Drivers
1
Number of Receivers
1
Operating Temperature
-40℃~+85℃
Quiescent Supply Current
5mA
Rise Time
8ns
Type
Transceiver
Voltage - Supply
4.5V~5.5V
Voltage - Supply(Absolute Max)
7V

Order codes

1

Pinout

8
The pins of the ST490ABDR
PinNameType
1VCCUnspecified
2RUnspecified
3DUnspecified
4GNDUnspecified
5YUnspecified
6ZUnspecified
7BUnspecified
8AUnspecified

Open-source boards using it

All 4
  • 4 layers86.2 × 101 mmRIU, the printed circuit board in 3D

    RIU

    UC-Aerospace/Hybrid25_RIU

    131 parts1
  • 4 layers78 × 67 mmFlight computer, the printed circuit board in 3D

    Flight computer

    Purdue-Space-Program/PSPL_R4_Avionics_Hardware

    Boards and other components for R4

    109 parts2
  • 2 layers100 × 100 mmRIU, the printed circuit board in 3D

    RIU

    UC-Aerospace/Hybrid25_RIU

    99 parts1
  • 4 layers86.2 × 101 mmRIU, the printed circuit board in 3D

    RIU

    UC-Aerospace/Hybrid25_RIU

    130 parts1

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Questions

Is there a KiCad symbol and footprint for the ST490ABDR?

Yes. The symbol is EasyEDA_Cloud:MAX490EESA-TUDI 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 ST490ABDR?

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

Where is the ST490ABDR datasheet?

STMicroelectronics publishes it: the Datasheet link on this page opens it.

Where can I order the ST490ABDR?

JLCPCB lists it as part C155672, with 588 in stock; the sellers' links on this page open their listings.

What can replace the ST490ABDR?

Parts like it in the library: the SP3485EN-L/TR by MaxLinear, the SP485EEN-L/TR by MaxLinear, the SN75176BD by Texas Instruments and the MAX485ESA+T by Maxim Integrated (Analog Devices). Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the ST490ABDR?

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

Parts like it

8