component
74HC238PW
Public Made by Adomby adom
Nexperia Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown74HC238PW
Nexperia · Signal Switches, Multiplexers, Decoders · TSSOP-16
74HC238PW from Nexperia, 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 | A0 | input | Address input (binary weight 1) that selects one of outputs Y0 to Y7; CMOS input levels on 74HC238, TTL input levels on 74HCT238. |
| 2 | A1 | input | Address input (binary weight 2) that selects one of outputs Y0 to Y7; CMOS input levels on 74HC238, TTL input levels on 74HCT238. |
| 3 | A2 | input | Address input (binary weight 4) that selects one of outputs Y0 to Y7; CMOS input levels on 74HC238, TTL input levels on 74HCT238. |
| 4 | E1 | input | Active-LOW enable input; all outputs are LOW unless E1 and E2 are LOW and E3 is HIGH. |
| 5 | E2 | input | Active-LOW enable input; all outputs are LOW unless E1 and E2 are LOW and E3 is HIGH. |
| 6 | E3 | input | Active-HIGH enable input; all outputs are LOW unless E1 and E2 are LOW and E3 is HIGH. |
| 7 | Y7 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 8 | GND | power_in | Ground (0 V) reference for all voltages on the device. |
| 9 | Y6 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 10 | Y5 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 11 | Y4 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 12 | Y3 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 13 | Y2 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 14 | Y1 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 15 | Y0 | output | Active-HIGH mutually exclusive decoder output, HIGH only when its address is selected and the device is enabled. |
| 16 | VCC | power_in | Supply voltage; 2.0 V to 6.0 V recommended for 74HC238 and 4.5 V to 5.5 V for 74HCT238, with absolute maximum of +7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| 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 |
|---|---|---|---|---|---|---|---|
| supply voltage | VCC | 2 | 5 | 6 | V | 74HC238 | 5 |
| input voltage | VI | 0 | V | 74HC238; max printed as VCC | 5 | ||
| output voltage | VO | 0 | V | 74HC238; max printed as VCC | 5 | ||
| ambient temperature | Tamb | -40 | 125 | °C | 5 | ||
| input transition rise and fall rate | Δt/ΔV | 625 | ns/V | VCC = 2.0 V | 5 | ||
| input transition rise and fall rate | Δt/ΔV | 1.67 | 139 | ns/V | VCC = 4.5 V | 5 | |
| input transition rise and fall rate | Δt/ΔV | 83 | ns/V | VCC = 6.0 V | 5 | ||
| supply voltage | VCC | -0.5 | 7 | V | 4 | ||
| input clamping current | IIK | -20 | 20 | mA | VI < -0.5 V or VI > VCC + 0.5 V | 4 | |
| output clamping current | IOK | -20 | 20 | mA | VO < -0.5 V or VO > VCC + 0.5 V | 4 | |
| output current | IO | -25 | 25 | mA | -0.5 V < VO < VCC + 0.5 V | 4 | |
| supply current | ICC | 50 | mA | 4 | |||
| ground current | IGND | -50 | mA | 4 | |||
| storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| total power dissipation | Ptot | 500 | mW | 4 | |||
| total power dissipation derating (SOT403-1 TSSOP16), slope printed as typ | Ptot | 8.5 | mW/K | derates linearly above 91 °C | 4 | ||
| HIGH-level input voltage | VIH | 1.5 | V | -40 °C to +125 °C; VCC = 2.0 V | 5 | ||
| HIGH-level input voltage | VIH | 3.15 | V | -40 °C to +125 °C; VCC = 4.5 V | 5 | ||
| HIGH-level input voltage | VIH | 4.2 | V | -40 °C to +125 °C; VCC = 6.0 V | 5 | ||
| LOW-level input voltage | VIL | 0.5 | V | -40 °C to +125 °C; VCC = 2.0 V | 5 | ||
| LOW-level input voltage | VIL | 1.35 | V | -40 °C to +125 °C; VCC = 4.5 V | 5 | ||
| LOW-level input voltage | VIL | 1.8 | V | -40 °C to +125 °C; VCC = 6.0 V | 5 | ||
| HIGH-level output voltage | VOH | 1.9 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = -20 μA; VCC = 2.0 V | 5 | ||
| HIGH-level output voltage | VOH | 4.4 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = -20 μA; VCC = 4.5 V | 5 | ||
| HIGH-level output voltage | VOH | 5.9 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = -20 μA; VCC = 6.0 V | 5 | ||
| HIGH-level output voltage | VOH | 3.7 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = -4.0 mA; VCC = 4.5 V | 5 | ||
| HIGH-level output voltage | VOH | 5.2 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = -5.2 mA; VCC = 6.0 V | 5 | ||
| LOW-level output voltage | VOL | 0.1 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = 20 μA; VCC = 2.0 V | 5 | ||
| LOW-level output voltage | VOL | 0.4 | V | -40 °C to +125 °C; VI = VIH or VIL; IO = 4.0 mA; VCC = 4.5 V | 5 | ||
| input leakage current | II | -1 | 1 | μA | -40 °C to +125 °C; VI = VCC or GND; VCC = 6.0 V | 5 | |
| supply current | ICC | 160 | μA | -40 °C to +125 °C; VI = VCC or GND; IO = 0 A; VCC = 6.0 V | 5 | ||
| propagation delay An to Yn | tpd | 225 | ns | -40 °C to +125 °C; see Fig. 4; VCC = 2.0 V | 7 | ||
| propagation delay An to Yn | tpd | 45 | ns | -40 °C to +125 °C; see Fig. 4; VCC = 4.5 V | 7 | ||
| propagation delay An to Yn | tpd | 38 | ns | -40 °C to +125 °C; see Fig. 4; VCC = 6.0 V | 7 | ||
| propagation delay E3 to Yn | tpd | 240 | ns | -40 °C to +125 °C; see Fig. 4; VCC = 2.0 V | 7 | ||
| propagation delay E3 to Yn | tpd | 48 | ns | -40 °C to +125 °C; see Fig. 4; VCC = 4.5 V | 7 | ||
| propagation delay E3 to Yn | tpd | 41 | ns | -40 °C to +125 °C; see Fig. 4; VCC = 6.0 V | 7 | ||
| propagation delay En to Yn | tpd | 235 | ns | -40 °C to +125 °C; see Fig. 5; VCC = 2.0 V | 7 | ||
| propagation delay En to Yn | tpd | 47 | ns | -40 °C to +125 °C; see Fig. 5; VCC = 4.5 V | 7 | ||
| propagation delay En to Yn | tpd | 40 | ns | -40 °C to +125 °C; see Fig. 5; VCC = 6.0 V | 7 | ||
| transition time | tt | 110 | ns | -40 °C to +125 °C; see Fig. 4 and Fig. 5; VCC = 2.0 V | 7 | ||
| transition time | tt | 22 | ns | -40 °C to +125 °C; see Fig. 4 and Fig. 5; VCC = 4.5 V | 7 | ||
| transition time | tt | 19 | ns | -40 °C to +125 °C; see Fig. 4 and Fig. 5; VCC = 6.0 V | 7 |
CAD (KiCad official)
- Symbol:
74HC238PW - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
74hc238pw-etched.step/74hc238pw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hc238pw.step/74hc238pw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (15 pp, sha256
f0f9b99563a06c78, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).