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MC74VHC257DTR2G

Public Made by Adom

by adom

onsemi Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout settled in review by an AI reviewer against the manufacturer's datasheet, KiCad symbol/footprint/3D.

componentlogicmc74vhc257dtr2gfactory-2.0.0extractor-text

Verified MC74VHC257DTR2G

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier mfr, 16 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MC74VHC257DTR2G · TSSOP-16 · 16 pins
  • ✓copper: 16 copper pads, none touching another net
  • ✓datasheet: all 16 pin names found in the 8-page datasheet
  • ✓distributor: lcsc C904178, digikey 488-MC74VHC257DTR2GTR-ND, mouser 863-MC74VHC257DTR2G
  • ✓family: TSSOP-16_4.4x5mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-xumiwxj0/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.7)
  • ✓pads: 16 pins = 16 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 16 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mc74vhc257dtr2g.kicad_sym✓ mc74vhc257dtr2g.kicad_mod✓ mc74vhc257dtr2g.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1h ago
viewers mc74vhc257dtr2g: viewers after the pinout correction · Ray 1h ago
mc74vhc257dtr2g-etched.glb Publish 0.1.0 · Ray 1h ago
mc74vhc257dtr2g-etched.step mc74vhc257dtr2g: factory component page (tier=mfr) · Ray 1h ago
mc74vhc257dtr2g-hero.glb Publish 0.1.1 · Ray 1h ago
mc74vhc257dtr2g-hero.overlay.json Publish 0.1.1 · Ray 1h ago
mc74vhc257dtr2g.glb Publish 0.1.0 · Ray 1h ago
mc74vhc257dtr2g.kicad_mod Publish 0.1.0 · Ray 1h ago
mc74vhc257dtr2g.kicad_sym Publish 0.1.1 · Ray 1h ago
mc74vhc257dtr2g.lbr Publish 0.1.1 · Ray 1h ago
mc74vhc257dtr2g.step Publish 0.1.0 · Ray 1h ago
package.json Publish 0.1.1 · Ray 1h ago
page.json mc74vhc257dtr2g 0.1.1: pinout corrected (2 pins) · Ray 1h ago
README.md Publish 0.1.1 · Ray 1h ago
verification.json Verified: Published by the parts factory: tier mfr, 16 pins · Ray 1h ago

MC74VHC257DTR2G

onsemi · Signal Switches, Multiplexers, Decoders · TSSOP-16

MC74VHC257DTR2G from onsemi, in a TSSOP-16. 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 S input Common select input that determines whether the A or B inputs are routed to the Y outputs; inputs tolerate up to 7 V.
2 A0 input Channel 0 data input A, routed to Y0 by the select decoding; tolerates up to 7 V.
3 B0 input Channel 0 data input B, routed to Y0 by the select decoding; tolerates up to 7 V.
4 Y0 tri_state Channel 0 3-state multiplexer output, driven from A0 or B0 as chosen by S.
5 A1 input Channel 1 data input A, routed to Y1 by the select decoding; tolerates up to 7 V.
6 B1 input Channel 1 data input B, routed to Y1 by the select decoding; tolerates up to 7 V.
7 Y1 tri_state Channel 1 3-state multiplexer output, driven from A1 or B1 as chosen by S.
8 GND power_in Ground (0 V reference).
9 Y2 tri_state Channel 2 3-state multiplexer output, driven from A2 or B2 as chosen by S.
10 B2 input Channel 2 data input B, routed to Y2 by the select decoding; tolerates up to 7 V.
11 A2 input Channel 2 data input A, routed to Y2 by the select decoding; tolerates up to 7 V.
12 Y3 tri_state Channel 3 3-state multiplexer output, driven from A3 or B3 as chosen by S.
13 B3 input Channel 3 data input B, routed to Y3 by the select decoding; tolerates up to 7 V.
14 A3 input Channel 3 data input A, routed to Y3 by the select decoding; tolerates up to 7 V.
15 ~{OE} input Common output enable input; when held High, data selection is inhibited and the outputs are disabled.
16 VCC power_in Positive supply voltage, 2.0 V to 5.5 V recommended operating range.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSSOP-16
Category Logic
Pins 16

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
VCC DC Supply Voltage VCC 2 5.5 V 3
VIN DC Input Voltage VIN 0 5.5 V 3
VOUT DC Output Voltage VOUT 0 V 3
Operating Temperature Range, all Package Types TA -55 125 °C all package types 3
Input Rise or Fall Time tr, tf 0 100 ns/V VCC = 3.3 V + 0.3 V 3
Input Rise or Fall Time tr, tf 20 ns/V VCC = 5.0 V + 0.5 V 3
Positive DC Supply Voltage VCC -0.5 7 V 3
Digital Input Voltage VIN -0.5 7 V 3
DC Output Voltage VOUT -0.5 V 3
Input Diode Current IIK -20 mA 3
Output Diode Current IOK 20 mA 3
DC Output Current, per Pin IOUT 25 mA 3
DC Supply Current, VCC and GND Pins ICC 75 mA 3
Power Dissipation in Still Air PD 180 mW TSSOP package; still air 3
Storage Temperature Range TSTG -65 150 °C 3
ESD Withstand Voltage, Human Body Model VESD 2000 V Human Body Model (Note 1); printed >2000 3
ESD Withstand Voltage, Machine Model VESD 200 V Machine Model (Note 2); printed >200 3
ESD Withstand Voltage, Charged Device Model VESD 2000 V Charged Device Model (Note 3); printed >2000 3
Latchup Performance ILATCHUP 300 mA Above VCC and below GND at 125°C (Note 4) 3
Minimum High-Level Input Voltage VIH 1.5 V VCC = 2.0 V; TA = 25°C 4
Minimum High-Level Input Voltage (ratio of VCC) VIH 0.7 x VCC VCC = 3.0 to 5.5 V; TA = 25°C 4
Maximum Low-Level Input Voltage VIL 0.5 V VCC = 2.0 V; TA = 25°C 4
Maximum Low-Level Input Voltage (ratio of VCC) VIL 0.3 x VCC VCC = 3.0 to 5.5 V; TA = 25°C 4
Maximum High-Level Output Voltage VOH 1.9 2 V VIN = VIH or VIL; IOH = −50 µA; VCC = 2.0 V; TA = 25°C 4
Maximum High-Level Output Voltage VOH 2.9 3 V VIN = VIH or VIL; IOH = −50 µA; VCC = 3.0 V; TA = 25°C 4
Maximum High-Level Output Voltage VOH 4.4 4.5 V VIN = VIH or VIL; IOH = −50 µA; VCC = 4.5 V; TA = 25°C 4
Maximum High-Level Output Voltage VOH 2.58 V VIN = VIH or VIL; IOH = −4 mA; VCC = 3.0 V; TA = 25°C 4
Maximum High-Level Output Voltage VOH 3.94 V VIN = VIH or VIL; IOH = −8 mA; VCC = 4.5 V; TA = 25°C 4
Maximum Low-Level Output Voltage VOL 0 0.1 V VIN = VIH or VIL; IOL = 50 µA; VCC = 2.0 V; TA = 25°C 4
Maximum Low-Level Output Voltage VOL 0.36 V VIN = VIH or VIL; IOH = 4 mA (as printed); VCC = 3.0 V; TA = 25°C 4
Input Leakage Current IIN -0.1 0.1 µA VIN = 5.5 V or GND; VCC = 0 to 5.5 V; TA = 25°C 4
Input Leakage Current IIN -1 1 µA VIN = 5.5 V or GND; VCC = 0 to 5.5 V; −55°C ≤ TA ≤ 125°C 4
Maximum 3-State Leakage Current IOZ -0.25 0.25 µA VIN = VIH or VIL; VOUT = VCC or GND; VCC = 5.5 V; TA = 25°C 4
Maximum 3-State Leakage Current IOZ -2.5 2.5 µA VIN = VIH or VIL; VOUT = VCC or GND; VCC = 5.5 V; −55°C ≤ TA ≤ 125°C 4
Maximum Quiescent Supply Current (per package) ICC 4 µA VIN = VCC or GND; VCC = 5.5 V; TA = 25°C 4
Maximum Quiescent Supply Current (per package) ICC 40 µA VIN = VCC or GND; VCC = 5.5 V; −55°C ≤ TA ≤ 125°C 4
Maximum Propagation Delay A or B to Y tPLH, tPHL 5.8 9.3 ns VCC = 3.3 ± 0.3 V; CL = 15 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay A or B to Y tPLH, tPHL 8.3 12.8 ns VCC = 3.3 ± 0.3 V; CL = 50 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay A or B to Y tPLH, tPHL 3.6 5.9 ns VCC = 5.0 ± 0.5 V; CL = 15 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay A or B to Y tPLH, tPHL 5.1 7.9 ns VCC = 5.0 ± 0.5 V; CL = 50 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay S to Y tPLH, tPHL 7 11 ns VCC = 3.3 ± 0.3 V; CL = 15 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay S to Y tPLH, tPHL 9.5 14.5 ns VCC = 3.3 ± 0.3 V; CL = 50 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay S to Y tPLH, tPHL 4 6.8 ns VCC = 5.0 ± 0.5 V; CL = 15 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Propagation Delay S to Y tPLH, tPHL 5.5 8.8 ns VCC = 5.0 ± 0.5 V; CL = 50 pF; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Output Enable Time OE to Y tPZL, tPZH 6.7 10.5 ns VCC = 3.3 ± 0.3 V; CL = 15 pF; RL = 1 kΩ; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Output Enable Time OE to Y tPZL, tPZH 9.2 14 ns VCC = 3.3 ± 0.3 V; CL = 50 pF; RL = 1 kΩ; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Output Enable Time OE to Y tPZL, tPZH 3.6 6.8 ns VCC = 5.0 ± 0.5 V; CL = 15 pF; RL = 1 kΩ; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Output Enable Time OE to Y tPZL, tPZH 5.1 8.8 ns VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Output Disable Time OE to Y tPLZ, tPHZ 12 15 ns VCC = 3.3 ± 0.3 V; CL = 50 pF; RL = 1 kΩ; input tr = tf = 3.0 ns; TA = 25°C 4
Maximum Output Disable Time OE to Y tPLZ, tPHZ 5.7 13 ns VCC = 5.0 ± 0.5 V; CL = 50 pF; RL = 1 kΩ; input tr = tf = 3.0 ns; TA = 25°C 4
Quiet Output Maximum Dynamic VOL VOLP 0.3 0.8 V Input tr = tf = 3.0 ns; CL = 50 pF; VCC = 5.0 V; TA = 25°C 5
Quiet Output Minimum Dynamic VOL VOLV -0.3 -0.8 V Input tr = tf = 3.0 ns; CL = 50 pF; VCC = 5.0 V; TA = 25°C 5
Minimum High Level Dynamic Input Voltage VIHD 3.5 V Input tr = tf = 3.0 ns; CL = 50 pF; VCC = 5.0 V; TA = 25°C 5
Maximum Low Level Dynamic Input Voltage VILD 1.5 V Input tr = tf = 3.0 ns; CL = 50 pF; VCC = 5.0 V; TA = 25°C 5
Maximum Input Capacitance CIN 4 10 pF 4
Thermal Resistance, Junction-to-Ambient, TSSOP package θJA 164 °C/W TSSOP package; junction-to-ambient 3

CAD (KiCad official)

  • Symbol: MC74VHC257DTR2G
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: mc74vhc257dtr2g-etched.step / mc74vhc257dtr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc74vhc257dtr2g.step / mc74vhc257dtr2g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 a2219249385a574e, retrieved 2026-11-06, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF