74FST3257D
onsemiExtended
-40℃~+85℃ 0.25ns 3uA 4V~5.5V Output enable high-impedance、Tri-state output Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders
- Part id
- onsemi/74FST3257D
- Category
- Signal Switches, Multiplexers, Decoders
- Package
- SOIC-16
- Pins
- 16
- In stock
- 0 at JLCPCB (C3210354)
Overview
The 74FST3257D is a signal Switches, Multiplexers, Decoder made by onsemi in a SOIC-16 package with 16 pins. -40℃~+85℃ 0.25ns 3uA 4V~5.5V Output enable high-impedance、Tri-state output Single Supply SOIC-16 Signal Switches, Multiplexers, Decoders.
PCBKit's library has its KiCad symbol (74xx:74CBTLV3257, from KiCad's library) and its footprint (Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3210354).
Symbol
Footprint
From the datasheet
9- Supply, least
- 4 V · VCC, recommended operating minimum · p. 3
- Supply, most
- 5.5 V · VCC, recommended operating maximum · p. 3
- Supply, absolute maximum
- 7 V · VCC, absolute maximum · p. 3
- Works from
- -40 °C · Operating free-air temperature minimum · p. 3
- Works up to
- 85 °C · Operating free-air temperature maximum · p. 3
- Junction, hottest
- 150 °C · Junction temperature under bias maximum · p. 3
- A pin gives at most
- 128 mA · DC output sink current absolute maximum · p. 3
- Junction to air (SOIC)
- 125 K/W · Junction-to-ambient thermal resistance · p. 3
- Takes working
- 3 mA · Quiescent supply current max, VCC = 5.5 V, IOUT = 0 · p. 4
What it is and has
3- Function
- Quad 2:1 multiplexer/demultiplexer bus switch · p. 1
- Control inputs
- TTL/CMOS compatible · p. 1
- Pin compatibility
- QS3257, FST3257, CBT3257 · p. 1
Specifications
43| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| DC Supply Voltage VCC | min -0.5 · max 7 V | 3 | |
| DC Input Voltage VI | min -0.5 · max 7 V | 3 | |
| DC Output Voltage VO | min -0.5 · max 7 V | 3 | |
| DC Input Diode Current IIK | VI below GND | min -50 mA | 3 |
| DC Output Diode Current IOK | VO below GND | min -50 mA | 3 |
| DC Output Sink Current IO | max 128 mA | 3 | |
| DC Supply Current per Supply Pin ICC | min -100 · max 100 mA | 3 | |
| DC Ground Current per Ground Pin IGND | min -100 · max 100 mA | 3 | |
| Storage Temperature Range TSTG | min -65 · max 150 _C | 3 | |
| Lead Temperature, 1 mm from Case for 10 Seconds TL | max 260 _C | 3 | |
| Junction Temperature Under Bias TJ | max 150 _C | 3 | |
| Thermal Resistance qJA | SOIC | max 125 _C/W | 3 |
| Supply Voltage VCC | Operating, Data Retention Only | min 4 · max 5.5 V | 3 |
| Input Voltage VI | Note 5 | min 0 · max 5.5 V | 3 |
| Output Voltage VO | HIGH or LOW State | min 0 · max 5.5 V | 3 |
| Operating Free−Air Temperature TA | min -40 · max 85 _C | 3 | |
| Switch I/O | VCC = 5.0 V ± 0.5 V | min 0 · max 5 ns/V | 3 |
| Clamp Diode Voltage VIK | IIN = −18mA; VCC = 4.5 V; TA = −40°C to +85°C | max -1.2 V | 4 |
| High−Level Input Voltage VIH | VCC = 4.0 to 5.5 V; TA = −40°C to +85°C | min 2 V | 4 |
| Low−Level Input Voltage VIL | VCC = 4.0 to 5.5 V; TA = −40°C to +85°C | max 0.8 V | 4 |
| Input Leakage Current II | 0 ≤ VIN ≤ 5.5 V; VCC = 5.5 V; TA = −40°C to +85°C | min -1 · max 1 mA | 4 |
| Off−State Leakage Current IOZ | 0 ≤ A, B ≤ VCC; VCC = 5.5 V; TA = −40°C to +85°C | min -1 · max 1 mA | 4 |
| Switch On Resistance (Note 6) RON | VIN = 0 V, IIN = 64 mA; VCC = 4.5 V | typ 4 · max 7 W | 4 |
| Switch On Resistance (Note 6) RON | VIN = 0 V, IIN = 30 mA; VCC = 4.5 V | typ 4 · max 7 W | 4 |
| Switch On Resistance (Note 6) RON | VIN = 2.4 V, IIN = 15 mA; VCC = 4.5 V | typ 8 · max 15 W | 4 |
| Switch On Resistance (Note 6) RON | VIN = 2.4 V, IIN = 15 mA; VCC = 4.0 V | typ 11 · max 20 W | 4 |
| Quiescent Supply Current ICC | VIN = VCC or GND, IOUT = 0; VCC = 5.5 V | max 3 mA | 4 |
| Increase In ICC per Input DICC | One input at 3.4 V, Other inputs at VCC or GND; VCC = 5.5 V | max 2.5 mA | 4 |
| Prop Delay Bus to Bus (Note 7) tPHL, tPLH | VI = OPEN; VCC = 4.5−5.5 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 0.25 ns | 4 |
| Prop Delay Bus to Bus (Note 7) tPHL, tPLH | VI = OPEN; VCC = 4.0 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 0.25 ns | 4 |
| Prop Delay, Select to Bus A tPHL, tPLH | VCC = 4.5−5.5 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | min 1 · max 4.7 ns | 4 |
| Prop Delay, Select to Bus A tPHL, tPLH | VCC = 4.0 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 5.2 ns | 4 |
| Output Enable Time, Select to Bus B tPZH, tPZL | VI = 7 V for tPZL; VCC = 4.5−5.5 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | min 1 · max 5.2 ns | 4 |
| Output Enable Time, Select to Bus B tPZH, tPZL | VI = 7 V for tPZL; VCC = 4.0 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 5.7 ns | 4 |
| Output Enable Time, IOE to Bus A, B tPZH, tPZL | VI = OPEN for tPZH; VCC = 4.5−5.5 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | min 1 · max 5.1 ns | 4 |
| Output Enable Time, IOE to Bus A, B tPZH, tPZL | VI = OPEN for tPZH; VCC = 4.0 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 5.6 ns | 4 |
| Output Disable Time, Select to Bus B tPHZ, tPLZ | VI = 7 V for tPLZ; VCC = 4.5−5.5 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | min 1 · max 5.2 ns | 4 |
| Output Disable Time, Select to Bus B tPHZ, tPLZ | VI = 7 V for tPLZ; VCC = 4.0 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 5.5 ns | 4 |
| Output Disable Time, IOE to Bus A, B tPHZ, tPLZ | VI = OPEN for tPHZ; VCC = 4.5−5.5 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | min 1 · max 5.5 ns | 4 |
| Output Disable Time, IOE to Bus A, B tPHZ, tPLZ | VI = OPEN for tPHZ; VCC = 4.0 V; CL = 50 pF, RU = RD = 500 W; TA = −40°C to +85°C | max 5.5 ns | 4 |
| Control Pin Input Capacitance CIN | VCC = 5.0 V; TA = +25°C, f = 1 MHz; characterized but not tested | typ 3 pF | 4 |
| A Port Input/Output Capacitance CI/O | VCC, OE = 5.0 V; TA = +25°C, f = 1 MHz; characterized but not tested | typ 7 pF | 4 |
| B Port Input/Output Capacitance CI/O | VCC, OE = 5.0 V; TA = +25°C, f = 1 MHz; characterized but not tested | typ 5 pF | 4 |
Pins, by the datasheet
16- 1 S
- Select input; LOW selects B1, HIGH selects B2 when OE is LOW. · p. 1
- 2 1B1
- Bus B1 for switch 1. · p. 1
- 3 1B2
- Bus B2 for switch 1. · p. 1
- 4 1A
- Bus A for switch 1. · p. 1
- 5 2B1
- Bus B1 for switch 2. · p. 1
- 6 2B2
- Bus B2 for switch 2. · p. 1
- 7 2A
- Bus A for switch 2. · p. 1
- 8 GND
- Ground. · p. 1
- 9 3A
- Bus A for switch 3. · p. 1
- 10 3B2
- Bus B2 for switch 3. · p. 1
- 11 3B1
- Bus B1 for switch 3. · p. 1
- 12 4A
- Bus A for switch 4. · p. 1
- 13 4B2
- Bus B2 for switch 4. · p. 1
- 14 4B1
- Bus B1 for switch 4. · p. 1
- 15 OE
- Bus switch enable; HIGH disconnects the buses. · p. 1
- 16 VCC
- Supply voltage. · p. 1
Ordering codes, by the datasheet
8- 74FST3257D
- SOIC−16 · 48 Units / Rail · p. 2
- 74FST3257DR2
- SOIC−16 · 2500 Units / Tape & Reel · p. 2
- 74FST3257DR2G
- SOIC−16 · Pb−Free; 2500 Units / Tape & Reel · p. 2
- 74FST3257DT
- TSSOP−16 · Inherently Pb−Free; 96 Units / Rail · p. 2
- 74FST3257DTR2
- TSSOP−16 · Inherently Pb−Free; 2500 Units / Tape & Reel · p. 2
- 74FST3257DTR2G
- TSSOP−16 · Pb−Free; 2500 Units / Tape & Reel · p. 2
- 74FST3257QSR
- QSOP−16 · 2500 Units / Tape & Reel · p. 2
- 74FST3257MNTWG
- QFN16 · Pb−Free; 3000 Units / Tape & Reel · p. 2
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Questions
Is there a KiCad symbol and footprint for the 74FST3257D?
Yes. The symbol is 74xx:74CBTLV3257 and the footprint Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 74FST3257D?
SOIC-16, with 16 pins. Its footprint is drawn on this page.
Where is the 74FST3257D datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the 74FST3257D?
JLCPCB lists it as part C3210354, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 74FST3257D?
Parts like it in the library: the 74HC4053M/TR by HGSEMI, the SN74HC138D by Texas Instruments, the 74HC138D by JSMSEMI and the MC74HC138AD by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.