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MC74VHC1GT126DBVT1G

onsemi · Buffers, Drivers, Receivers, Transceivers · SC-74A-5

MC74VHC1GT126DBVT1G from onsemi, in a SC-74A-5. 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 OE input Output enable input; per the function table, Y is high-impedance (Z) when OE is L and Y follows A when OE is H, with input protection up to 5.5 V regardless of VCC.
2 A input Data input of the noninverting buffer, which tolerates voltages up to 5.5 V regardless of the supply voltage.
3 GND power_in Ground reference for the device.
4 Y tri_state Three-state buffered output that is high-impedance when disabled, with a maximum DC output source/sink current of ±25 mA and protection when VCC = 0 V or when the output voltage exceeds VCC.
5 VCC power_in Positive supply voltage, specified for 2.0 V to 5.5 V operation.

Key specifications

Parameter Value
Manufacturer onsemi
Package SC-74A-5
Category Logic
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Positive DC Supply Voltage VCC 2 5.5 V 4
DC Input Voltage VIN 0 5.5 V 4
DC Output Voltage, Active-Mode (High or Low State) VOUT 0 V Active mode; max = VCC 4
DC Output Voltage, Tri-State Mode (Note 1) VOUT 0 5.5 V Tri-state mode 4
DC Output Voltage, Power-Down Mode VOUT 0 5.5 V Power-down mode (VCC = 0 V) 4
Operating Temperature Range TA -55 125 °C 4
Input Rise and Fall Time tr, tf 0 20 ns/V VCC = 2.0 V 4
Input Rise and Fall Time tr, tf 0 10 ns/V VCC = 3.0 V to 3.6 V 4
Input Rise and Fall Time tr, tf 0 5 ns/V VCC = 4.5 V to 5.5 V 4
Thermal Resistance, Junction-to-Ambient (SC-74A) θJA 320 °C/W Minimum pad spacing on FR4, 10 mm x 1 inch 2 oz trace, no air flow per JESD51-7 3
DC Supply Voltage VCC -0.5 6.5 V SC-74A package 3
DC Input Voltage VIN -0.5 6.5 V SC-74A package 3
DC Output Voltage, Active-Mode (High or Low State) VOUT -0.5 V Active mode; max = VCC + 0.5 V 3
DC Output Voltage, Tri-State Mode (Note 1) VOUT -0.5 6.5 V Tri-state mode 3
DC Output Voltage, Power-Down Mode VOUT -0.5 6.5 V Power-down mode (VCC = 0 V) 3
DC Input Diode Current IIK -20 mA VIN < GND 3
DC Output Diode Current IOK -20 mA VOUT < GND 3
DC Output Source/Sink Current IOUT -25 25 mA 3
DC Supply Current per Supply Pin or Ground Pin ICC or IGND -50 50 mA 3
Storage Temperature Range TSTG -65 150 °C 3
Lead Temperature TL 260 °C 1 mm from case for 10 s 3
Junction Temperature Under Bias TJ 150 °C 3
High-Level Input Voltage VIH 1 V VCC = 2.0 V; TA = -55 to 125 °C 5
High-Level Input Voltage VIH 1.4 V VCC = 3.0 V; TA = -55 to 125 °C 5
High-Level Input Voltage VIH 2 V VCC = 4.5 V; TA = -55 to 125 °C 5
Low-Level Input Voltage VIL 0.28 V VCC = 2.0 V; TA = -55 to 125 °C 5
Low-Level Input Voltage VIL 0.45 V VCC = 3.0 V; TA = -55 to 125 °C 5
Low-Level Input Voltage VIL 0.8 V VCC = 4.5 V; TA = -55 to 125 °C 5
High-Level Output Voltage VOH 1.9 V VCC = 2.0 V; VIN = VIH or VIL; IOH = -50 µA; TA = -55 to 125 °C 5
High-Level Output Voltage VOH 2.9 V VCC = 3.0 V; VIN = VIH or VIL; IOH = -50 µA; TA = -55 to 125 °C 5
High-Level Output Voltage VOH 4.4 V VCC = 4.5 V; VIN = VIH or VIL; IOH = -50 µA; TA = -55 to 125 °C 5
High-Level Output Voltage VOH 2.34 V VCC = 3.0 V; VIN = VIH or VIL; IOH = -4 mA; TA = -55 to 125 °C 5
High-Level Output Voltage VOH 3.66 V VCC = 4.5 V; VIN = VIH or VIL; IOH = -8 mA; TA = -55 to 125 °C 5
Low-Level Output Voltage VOL 0.1 V VCC = 2.0 V; VIN = VIH or VIL; IOL = 50 µA; TA = -55 to 125 °C 5
Low-Level Output Voltage VOL 0.52 V VCC = 3.0 V; VIN = VIH or VIL; IOL = 4 mA; TA = -55 to 125 °C 5
Input Leakage Current IIN 1 µA VIN = 5.5 V or GND; VCC = 2.0 to 5.5 V; TA = -55 to 125 °C 5
3-State Output Leakage Current IOZ 2.5 µA VOUT = 0 V to 5.5 V; VCC = 5.5 V; TA = -55 to 125 °C 5
Power Off Leakage Current IOFF 10 µA VIN = 5.5 V or VOUT = 5.5 V; VCC = 0 V; TA = -55 to 125 °C 5
Quiescent Supply Current ICC 40 µA VIN = VCC or GND; VCC = 5.5 V; TA = -55 to 125 °C 5
Increase in Quiescent Supply Current per Input Pin ICCT 1.65 mA One input VIN = 3.4 V; other input at VCC or GND; VCC = 5.5 V; TA = -55 to 125 °C 5
Input Capacitance CIN 4 10 pF Typ at TA = 25 °C; max printed for TA = -55 to 125 °C 6
Propagation Delay, A to Y tPLH, tPHL 12 ns CL = 15 pF; VCC = 3.0 to 3.6 V; TA = -55 to 125 °C 6
Propagation Delay, A to Y tPLH, tPHL 16 ns CL = 50 pF; VCC = 3.0 to 3.6 V; TA = -55 to 125 °C 6
Propagation Delay, A to Y tPLH, tPHL 8.5 ns CL = 15 pF; VCC = 4.5 to 5.5 V; TA = -55 to 125 °C 6
Propagation Delay, A to Y tPLH, tPHL 10.5 ns CL = 50 pF; VCC = 4.5 to 5.5 V; TA = -55 to 125 °C 6
Output Enable Time, OE to Y tPZL, tPZH 11.5 ns CL = 15 pF; VCC = 3.0 to 3.6 V; TA = -55 to 125 °C 6
Output Enable Time, OE to Y tPZL, tPZH 15 ns CL = 50 pF; VCC = 3.0 to 3.6 V; TA = -55 to 125 °C 6
Output Enable Time, OE to Y tPZL, tPZH 8.5 ns CL = 15 pF; VCC = 4.5 to 5.5 V; TA = -55 to 125 °C 6
Output Enable Time, OE to Y tPZL, tPZH 10.5 ns CL = 50 pF; VCC = 4.5 to 5.5 V; TA = -55 to 125 °C 6
Output Disable Time, OE to Y tPLZ, tPHZ 14.5 ns CL = 15 pF; VCC = 3.0 to 3.6 V; TA = -55 to 125 °C 6
Output Disable Time, OE to Y tPLZ, tPHZ 18 ns CL = 50 pF; VCC = 3.0 to 3.6 V; TA = -55 to 125 °C 6
Output Disable Time, OE to Y tPLZ, tPHZ 10 ns CL = 15 pF; VCC = 4.5 to 5.5 V; TA = -55 to 125 °C 6
Output Disable Time, OE to Y tPLZ, tPHZ 12 ns CL = 50 pF; VCC = 4.5 to 5.5 V; TA = -55 to 125 °C 6

CAD (KiCad official)

  • Symbol: MC74VHC1GT126DBVT1G
  • Footprint: Package_TO_SOT_SMD:SC-74A-5_1.55x2.9mm_P0.95mm
  • 3D model: SC-74A-5 (KiCad packages3D, STEP)
  • 3D model files: mc74vhc1gt126dbvt1g-etched.step / mc74vhc1gt126dbvt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc74vhc1gt126dbvt1g.step / mc74vhc1gt126dbvt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (16 pp, sha256 4f0c33344a93beef, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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