component
74HCT238PW
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
markdown74HCT238PW
Nexperia · Signal Switches, Multiplexers, Decoders · TSSOP-16
74HCT238PW 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 A0 (least significant binary select input) with input voltage range 0 V to VCC. |
| 2 | A1 | input | Address input A1 with input voltage range 0 V to VCC. |
| 3 | A2 | input | Address input A2 with input voltage range 0 V to VCC. |
| 4 | E1 | input | Enable input E1, active LOW; all outputs stay LOW unless E1 and E2 are LOW and E3 is HIGH. |
| 5 | E2 | input | Enable input E2, active LOW; all outputs stay LOW unless E1 and E2 are LOW and E3 is HIGH. |
| 6 | E3 | input | Enable input E3, active HIGH; must be HIGH together with E1 and E2 LOW for the decoder to be enabled. |
| 7 | Y7 | output | Active HIGH mutually exclusive decoder output Y7 with output voltage range 0 V to VCC. |
| 8 | GND | power_in | Ground (0 V) reference pin; all voltages are referenced to this pin. |
| 9 | Y6 | output | Active HIGH mutually exclusive decoder output Y6 with output voltage range 0 V to VCC. |
| 10 | Y5 | output | Active HIGH mutually exclusive decoder output Y5 with output voltage range 0 V to VCC. |
| 11 | Y4 | output | Active HIGH mutually exclusive decoder output Y4 with output voltage range 0 V to VCC. |
| 12 | Y3 | output | Active HIGH mutually exclusive decoder output Y3 with output voltage range 0 V to VCC. |
| 13 | Y2 | output | Active HIGH mutually exclusive decoder output Y2 with output voltage range 0 V to VCC. |
| 14 | Y1 | output | Active HIGH mutually exclusive decoder output Y1 with output voltage range 0 V to VCC. |
| 15 | Y0 | output | Active HIGH mutually exclusive decoder output Y0 with output voltage range 0 V to VCC. |
| 16 | VCC | power_in | Supply voltage pin; 2.0 V to 6.0 V for 74HC238 and 4.5 V to 5.5 V for 74HCT238 per Table 5. |
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 | 4.5 | 5 | 5.5 | V | 5 | |
| Input voltage | VI | 0 | V | 5 | |||
| Output voltage | VO | 0 | V | 5 | |||
| Ambient temperature | Tamb | -40 | 125 | °C | 5 | ||
| Input transition rise and fall rate | Δt/ΔV | 1.67 | 139 | ns/V | VCC = 4.5 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 | |||
| HIGH-level input voltage | VIH | 2 | 1.6 | V | VCC = 4.5 V to 5.5 V; 25 °C | 6 | |
| HIGH-level input voltage | VIH | 2 | V | VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 6 | ||
| LOW-level input voltage | VIL | 1.2 | 0.8 | V | VCC = 4.5 V to 5.5 V; 25 °C | 6 | |
| LOW-level input voltage | VIL | 0.8 | V | VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 6 | ||
| HIGH-level output voltage | VOH | 4.4 | 4.5 | V | VI = VIH or VIL; VCC = 4.5 V; IO = -20 μA; 25 °C | 6 | |
| HIGH-level output voltage | VOH | 4.4 | V | VI = VIH or VIL; VCC = 4.5 V; IO = -20 μA; -40 °C to +125 °C | 6 | ||
| HIGH-level output voltage | VOH | 3.98 | 4.32 | V | VI = VIH or VIL; VCC = 4.5 V; IO = -4.0 mA; 25 °C | 6 | |
| HIGH-level output voltage | VOH | 3.7 | V | VI = VIH or VIL; VCC = 4.5 V; IO = -4.0 mA; -40 °C to +125 °C | 6 | ||
| LOW-level output voltage | VOL | 0 | 0.1 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 20 μA; 25 °C | 6 | |
| LOW-level output voltage | VOL | 0.1 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 20 μA; -40 °C to +125 °C | 6 | ||
| LOW-level output voltage | VOL | 0.16 | 0.26 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 4.0 mA; 25 °C | 6 | |
| LOW-level output voltage | VOL | 0.4 | V | VI = VIH or VIL; VCC = 4.5 V; IO = 4.0 mA; -40 °C to +125 °C | 6 | ||
| Input leakage current | II | -0.1 | 0.1 | μA | VI = VCC or GND; VCC = 5.5 V; 25 °C | 6 | |
| Input leakage current | II | -1 | 1 | μA | VI = VCC or GND; VCC = 5.5 V; -40 °C to +125 °C | 6 | |
| Supply current | ICC | 8 | μA | VI = VCC or GND; VCC = 5.5 V; IO = 0 A; 25 °C | 6 | ||
| Supply current | ICC | 160 | μA | VI = VCC or GND; VCC = 5.5 V; IO = 0 A; -40 °C to +125 °C | 6 | ||
| Additional supply current (An inputs) | ΔICC | 70 | 252 | μA | per input pin; VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; 25 °C | 6 | |
| Additional supply current (An inputs) | ΔICC | 343 | μA | per input pin; VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 6 | ||
| Additional supply current (E1, E2 inputs) | ΔICC | 40 | 144 | μA | per input pin; VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; 25 °C | 6 | |
| Additional supply current (E1, E2 inputs) | ΔICC | 196 | μA | per input pin; VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 6 | ||
| Additional supply current (E3 input) | ΔICC | 145 | 522 | μA | per input pin; VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; 25 °C | 6 | |
| Additional supply current (E3 input) | ΔICC | 711 | μA | per input pin; VI = VCC - 2.1 V; IO = 0 A; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V; -40 °C to +125 °C | 6 | ||
| Propagation delay An to Yn | tpd | 19 | 35 | ns | VCC = 4.5 V; see Fig. 4; 25 °C | 8 | |
| Propagation delay An to Yn | tpd | 53 | ns | VCC = 4.5 V; see Fig. 4; -40 °C to +125 °C | 8 | ||
| Propagation delay E3 to Yn | tpd | 20 | 37 | ns | VCC = 4.5 V; see Fig. 4; 25 °C | 8 | |
| Propagation delay E3 to Yn | tpd | 56 | ns | VCC = 4.5 V; see Fig. 4; -40 °C to +125 °C | 8 | ||
| Propagation delay En to Yn | tpd | 20 | 35 | ns | VCC = 4.5 V; see Fig. 5; 25 °C | 8 | |
| Propagation delay En to Yn | tpd | 53 | ns | VCC = 4.5 V; see Fig. 5; -40 °C to +125 °C | 8 | ||
| Transition time | tt | 7 | 15 | ns | VCC = 4.5 V; see Fig. 4 and Fig. 5; 25 °C | 8 | |
| Transition time | tt | 22 | ns | VCC = 4.5 V; see Fig. 4 and Fig. 5; -40 °C to +125 °C | 8 | ||
| Input capacitance | CI | 3.5 | pF | 6 | |||
| Power dissipation capacitance | CPD | 76 | pF | per package; VI = GND to VCC - 1.5 V | 8 |
CAD (KiCad official)
- Symbol:
74HCT238PW - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
74hct238pw-etched.step/74hct238pw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hct238pw.step/74hct238pw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (15 pp, sha256
f0f9b99563a06c78, retrieved 2026-10-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).