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sn74hc126pwr
Public Unreviewedby Ray
Texas Instruments Buffer/Driver/Transceiver, TSSOP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownSN74HC126PWR
Texas Instruments · Buffer/Driver/Transceiver · TSSOP-14
SN74HC126PWR from Texas Instruments, in a TSSOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OE | input | Channel 1 output-enable input (active high). When high, buffer 1 output 1Y drives the logic value of 1A; when low, 1Y enters the high-impedance state. |
| 2 | 1A | input | Channel 1 buffer data input. Logic level driven to 1Y when 1OE is high. CMOS input, VIH/VIL scale with VCC (e.g., 3.15 V / 1.35 V at VCC = 4.5 V). |
| 3 | 1Y | tri_state | Channel 1 buffer output (3-state). Follows 1A when 1OE = H; high-impedance when 1OE = L. Sources/sinks up to ±6 mA at VCC = 4.5 V. |
| 4 | 2OE | input | Channel 2 output-enable input (active high). When high, 2Y drives the logic value of 2A; when low, 2Y is high-impedance. |
| 5 | 2A | input | Channel 2 buffer data input. Logic level driven to 2Y when 2OE is high. |
| 6 | 2Y | tri_state | Channel 2 buffer output (3-state). Follows 2A when 2OE = H; high-impedance when 2OE = L. |
| 7 | GND | power_in | Ground reference (0 V). Connect to the system ground. |
| 8 | 3Y | tri_state | Channel 3 buffer output (3-state). Follows 3A when 3OE = H; high-impedance when 3OE = L. |
| 9 | 3A | input | Channel 3 buffer data input. Logic level driven to 3Y when 3OE is high. |
| 10 | 3OE | input | Channel 3 output-enable input (active high). When high, 3Y drives 3A; when low, 3Y is high-impedance. |
| 11 | 4Y | tri_state | Channel 4 buffer output (3-state). Follows 4A when 4OE = H; high-impedance when 4OE = L. |
| 12 | 4A | input | Channel 4 buffer data input. Logic level driven to 4Y when 4OE is high. |
| 13 | 4OE | input | Channel 4 output-enable input (active high). When high, 4Y drives 4A; when low, 4Y is high-impedance. |
| 14 | VCC | power_in | Positive supply voltage. Recommended operating range 2 V to 6 V (5 V nominal). Bypass with a local 0.1 µF capacitor to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |
Ordering variants
SN74HC126PWRSN74HC126PWRDSN74HC126PWRDRSN74HC126PWRDBSN74HC126PWRDBRSN74HC126PWRNSN74HC126PWRNSSN74HC126PWRNSRSN74HC126PWRJSN74HC126PWRFK
CAD (KiCad official)
- Symbol:
SN74HC126PWR - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (None pp, sha256
2bc6c4a397e0196c, retrieved 2026-08-17, 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).