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74VHCT245AMTCX

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onsemi Buffers / Drivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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74VHCT245AMTCX

onsemi · Buffers / Drivers · TSSOP-20

74VHCT245AMTCX from onsemi, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 T/R input Transmit/Receive input that sets direction: LOW sends Bus B data to Bus A, HIGH sends Bus A data to Bus B when OE is LOW.
2 A0 bidirectional Side A data input or 3-STATE output, bit 0.
3 A1 bidirectional Side A data input or 3-STATE output, bit 1.
4 A2 bidirectional Side A data input or 3-STATE output, bit 2.
5 A3 bidirectional Side A data input or 3-STATE output, bit 3.
6 A4 bidirectional Side A data input or 3-STATE output, bit 4.
7 A5 bidirectional Side A data input or 3-STATE output, bit 5.
8 A6 bidirectional Side A data input or 3-STATE output, bit 6.
9 A7 bidirectional Side A data input or 3-STATE output, bit 7.
10 GND power_in Ground pin.
11 B7 bidirectional Side B data input or 3-STATE output, bit 7.
12 B6 bidirectional Side B data input or 3-STATE output, bit 6.
13 B5 bidirectional Side B data input or 3-STATE output, bit 5.
14 B4 bidirectional Side B data input or 3-STATE output, bit 4.
15 B3 bidirectional Side B data input or 3-STATE output, bit 3.
16 B2 bidirectional Side B data input or 3-STATE output, bit 2.
17 B1 bidirectional Side B data input or 3-STATE output, bit 1.
18 B0 bidirectional Side B data input or 3-STATE output, bit 0.
19 OE input Active-low Output Enable input; HIGH places the A and B outputs in the HIGH-Z state.
20 VCC power_in Supply voltage, 4.5V to 5.5V recommended operating range.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-20
Category Logic ICs
Pins 20

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VCC 4.5 5.5 V 4
Input Voltage VIN 0 5.5 V 4
Output Voltage (outputs active) VOUT 0 V Printed as 0V to VCC; Note 2 (HIGH or LOW state) 4
Output Voltage (OFF-State or VCC = 0V) VOUT 0 5.5 V Note 3: outputs in OFF-State or VCC = 0V 4
Operating Temperature TOPR -40 85 °C 4
Input Rise and Fall Time tr, tf 0 20 ns/V VCC = 5.0V ± 0.5V 4
Supply Voltage VCC -0.5 7 V 4
DC Input Voltage VIN -0.5 7 V 4
DC Output Voltage VOUT -0.5 V Note 2 (HIGH or LOW state); printed upper limit VCC + 0.5V 4
DC Output Voltage VOUT -0.5 7 V Note 3 (OFF-State or VCC = 0V) 4
Input Diode Current IIK -20 mA 4
Output Diode Current IOK -20 20 mA Note 4: VOUT < GND, VOUT > VCC (outputs active) 4
DC Output Current IOUT -25 25 mA 4
DC VCC / GND Current ICC -75 75 mA 4
Storage Temperature TSTG -65 150 °C 4
Lead Temperature TL 260 °C Soldering, 10 seconds 4
HIGH Level Input Voltage VIH 2 V VCC = 4.5V, TA = -40°C to +85°C 5
LOW Level Input Voltage VIL 0.8 V VCC = 4.5V, TA = -40°C to +85°C 5
HIGH Level Output Voltage VOH 4.4 4.5 V VCC = 4.5V, VIN = VIH or VIL, IOH = -50µA, TA = 25°C 5
HIGH Level Output Voltage VOH 4.4 V VCC = 4.5V, VIN = VIH or VIL, IOH = -50µA, TA = -40°C to +85°C 5
HIGH Level Output Voltage VOH 3.94 V VCC = 4.5V, VIN = VIH or VIL, IOH = -8mA, TA = 25°C 5
HIGH Level Output Voltage VOH 3.8 V VCC = 4.5V, VIN = VIH or VIL, IOH = -8mA, TA = -40°C to +85°C 5
LOW Level Output Voltage VOL 0 0.1 V VCC = 4.5V, VIN = VIH or VIL, IOL = 50µA, TA = 25°C 5
LOW Level Output Voltage VOL 0.1 V VCC = 4.5V, VIN = VIH or VIL, IOL = 50µA, TA = -40°C to +85°C 5
LOW Level Output Voltage VOL 0.36 V VCC = 4.5V, VIN = VIH or VIL, IOL = 8mA, TA = 25°C 5
LOW Level Output Voltage VOL 0.44 V VCC = 4.5V, VIN = VIH or VIL, IOL = 8mA, TA = -40°C to +85°C 5
3-STATE Output Off-State Current IOZ -0.25 0.25 µA VCC = 5.5V, VIN = VIH or VIL, VOUT = VCC or GND, TA = 25°C 5
3-STATE Output Off-State Current IOZ -2.5 2.5 µA VCC = 5.5V, VIN = VIH or VIL, VOUT = VCC or GND, TA = -40°C to +85°C 5
Input Leakage Current IIN -0.1 0.1 µA VCC = 0-5.5V, VIN = 5.5V or GND, TA = 25°C 5
Input Leakage Current IIN -1 1 µA VCC = 0-5.5V, VIN = 5.5V or GND, TA = -40°C to +85°C 5
Quiescent Supply Current ICC 4 µA VCC = 5.5V, VIN = VCC or GND, TA = 25°C 5
Quiescent Supply Current ICC 40 µA VCC = 5.5V, VIN = VCC or GND, TA = -40°C to +85°C 5
Maximum ICC / Input ICCT 1.35 mA VCC = 5.5V, VIN = 3.4V, other input = VCC or GND, TA = 25°C 5
Maximum ICC / Input ICCT 1.5 mA VCC = 5.5V, VIN = 3.4V, other input = VCC or GND, TA = -40°C to +85°C 5
Output Leakage Current (Power Down State) IOFF 0.5 µA VCC = 0.0V, VOUT = 5.5V, TA = 25°C 5
Output Leakage Current (Power Down State) IOFF 5 µA VCC = 0.0V, VOUT = 5.5V, TA = -40°C to +85°C 5
Quiet Output Maximum Dynamic VOL VOLP 1.2 1.6 V VCC = 5.0V, CL = 50pF, TA = 25°C 5
Quiet Output Minimum Dynamic VOL VOLV -1.6 -1.2 V VCC = 5.0V, CL = 50pF, TA = 25°C 5
Minimum HIGH Level Dynamic Input Voltage VIHD 2 V VCC = 5.0V, CL = 50pF, TA = 25°C 5
Maximum LOW Level Dynamic Input Voltage VILD 0.8 V VCC = 5.0V, CL = 50pF, TA = 25°C 5
Propagation Delay Time tPLH, tPHL 4.9 7.7 ns VCC = 5.0 ± 0.5V, CL = 15pF, TA = 25°C 6
Propagation Delay Time tPLH, tPHL 1 8.5 ns VCC = 5.0 ± 0.5V, CL = 15pF, TA = -40°C to +85°C 6
Propagation Delay Time tPLH, tPHL 5.4 8.7 ns VCC = 5.0 ± 0.5V, CL = 50pF, TA = 25°C 6
Propagation Delay Time tPLH, tPHL 1 9.5 ns VCC = 5.0 ± 0.5V, CL = 50pF, TA = -40°C to +85°C 6
3-STATE Output Enable Time tPZL, tPZH 9.4 13.8 ns VCC = 5.0 ± 0.5V, RL = 1kΩ, CL = 15pF, TA = 25°C 6
3-STATE Output Enable Time tPZL, tPZH 1 15 ns VCC = 5.0 ± 0.5V, RL = 1kΩ, CL = 15pF, TA = -40°C to +85°C 6
3-STATE Output Enable Time tPZL, tPZH 9.9 14.8 ns VCC = 5.0 ± 0.5V, RL = 1kΩ, CL = 50pF, TA = 25°C 6
3-STATE Output Enable Time tPZL, tPZH 1 16 ns VCC = 5.0 ± 0.5V, RL = 1kΩ, CL = 50pF, TA = -40°C to +85°C 6
3-STATE Output Disable Time tPLZ, tPHZ 10.1 15.4 ns VCC = 5.0 ± 0.5V, RL = 1kΩ, CL = 50pF, TA = 25°C 6
3-STATE Output Disable Time tPLZ, tPHZ 1 16.5 ns VCC = 5.0 ± 0.5V, RL = 1kΩ, CL = 50pF, TA = -40°C to +85°C 6
Output to Output Skew tOSLH, tOSHL 1 ns VCC = 5.0 ± 0.5V (Note 7) 6
Input Capacitance CIN 4 10 pF VCC = Open 6
Output Capacitance COUT 13 pF VCC = 5.0V 6
Power Dissipation Capacitance CPD 16 pF 6

CAD (KiCad official)

  • Symbol: 74VHCT245AMTCX
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: 74vhct245amtcx-etched.step / 74vhct245amtcx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 74vhct245amtcx.step / 74vhct245amtcx.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (11 pp, sha256 a30ccf58c035e641, retrieved 2026-10-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF