74HC04 hex inverter
Pinout and electrical limits for the Texas Instruments SN74HC04.
Pinout
Arrows show signal direction between paired pins.
9 · 4A
CMOS input · 0 V to VCC
Drive from a compatible digital output with fast edges. Tie this input to GND or VCC when the gate is unused.
All 14 pins
| Pin | Name | Role | Range |
|---|---|---|---|
| 1 | 1A | CMOS input | 0 V to VCC |
| 2 | 1Y | Push-pull output | 0 V to VCC |
| 3 | 2A | CMOS input | 0 V to VCC |
| 4 | 2Y | Push-pull output | 0 V to VCC |
| 5 | 3A | CMOS input | 0 V to VCC |
| 6 | 3Y | Push-pull output | 0 V to VCC |
| 7 | GND | Ground reference | 0 V |
| 8 | 4Y | Push-pull output | 0 V to VCC |
| 9 | 4A | CMOS input | 0 V to VCC |
| 10 | 5Y | Push-pull output | 0 V to VCC |
| 11 | 5A | CMOS input | 0 V to VCC |
| 12 | 6Y | Push-pull output | 0 V to VCC |
| 13 | 6A | CMOS input | 0 V to VCC |
| 14 | VCC | Positive supply | 2–6 V |
Inverter channels
Each channel has a fixed input and output. When A is LOW, Y is HIGH. When A is HIGH, Y is LOW.
Electrical limits
Recommended operation for TI SN74HC04 is VCC 2–6 V, free-air temperature −40 to +85 °C, and input and output voltages within the supply rails. All voltages are relative to GND.
Digital input thresholds
| VCC | VIL max (LOW) | VIH min (HIGH) |
|---|---|---|
| 2 V | 0.5 V | 1.5 V |
| 4.5 V | 1.35 V | 3.15 V |
| 6 V | 1.8 V | 4.2 V |
Use the driver’s guaranteed output levels and the receiver’s input limits at their actual supply voltages. A 3.3 V output driving a 5 V HC input requires a worst-case level check.
Output levels at 4.5 V
| Output load magnitude | VOL max | VOH min |
|---|---|---|
| 20 µA | ≤ 0.1 V | ≥ 4.4 V |
| 4 mA | 0.33 V | 3.84 V |
Limits apply over −40 to +85 °C with a valid LOW or HIGH input. At 4.5 V and 50 pF, propagation delay is 9 ns typical at 25 °C and 24 ns maximum across the operating temperature range.
Source: TI SCLS078H Rev. H, §§ 6.3, 6.5, 6.7 and 7.
Package and documents
TI package code DB · 6.5 × 5.3 mm nominal body · 0.65 mm lead pitch. Use TI’s package outline for footprint dimensions and tolerances.
Order codes use the SN74HC04 prefix. Suffixes for this package in TI’s 23 October 2026 addendum: DBR, DBR.A, DBRE4, DBRG4 (last-time buy).
- TI SNx4HC04 datasheet (PDF)· SCLS078H, Rev. H (April 2021), with package option addendum
- TI SN74HC04 product and ordering information
Pin assignments: § 5. Package dimensions: Device Information and Mechanical, Packaging, and Orderable Information.