component
sn74ahct126pwr
Public Unreviewedby Ray
Texas Instruments Buffer/Driver/Transceiver, TSSOP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownSN74AHCT126PWR
Texas Instruments · Buffer/Driver/Transceiver · TSSOP-14
SN74AHCT126PWR 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 | Active-high output enable for channel 1. When high, 1Y follows 1A; when low, 1Y is in the high-impedance (3-state) mode. TTL-compatible input (VIH >= 2V, VIL <= 0.8V). |
| 2 | 1A | input | Channel 1 buffer data input. TTL-compatible logic input; buffered to 1Y when 1OE is high. |
| 3 | 1Y | tri_state | Channel 1 3-state buffer output. Drives the logic level of 1A when 1OE is high; high-impedance when 1OE is low. Rated IOH = -8 mA / IOL = 8 mA. |
| 4 | 2OE | input | Active-high output enable for channel 2. When high, 2Y follows 2A; when low, 2Y is in the high-impedance (3-state) mode. |
| 5 | 2A | input | Channel 2 buffer data input. TTL-compatible logic input; buffered to 2Y when 2OE is high. |
| 6 | 2Y | tri_state | Channel 2 3-state buffer output. Drives the logic level of 2A when 2OE is high; high-impedance when 2OE is low. Rated IOH = -8 mA / IOL = 8 mA. |
| 7 | GND | power_in | Device ground reference (0 V). |
| 8 | 3Y | tri_state | Channel 3 3-state buffer output. Drives the logic level of 3A when 3OE is high; high-impedance when 3OE is low. Rated IOH = -8 mA / IOL = 8 mA. |
| 9 | 3A | input | Channel 3 buffer data input. TTL-compatible logic input; buffered to 3Y when 3OE is high. |
| 10 | 3OE | input | Active-high output enable for channel 3. When high, 3Y follows 3A; when low, 3Y is in the high-impedance (3-state) mode. |
| 11 | 4Y | tri_state | Channel 4 3-state buffer output. Drives the logic level of 4A when 4OE is high; high-impedance when 4OE is low. Rated IOH = -8 mA / IOL = 8 mA. |
| 12 | 4A | input | Channel 4 buffer data input. TTL-compatible logic input; buffered to 4Y when 4OE is high. |
| 13 | 4OE | input | Active-high output enable for channel 4. When high, 4Y follows 4A; when low, 4Y is in the high-impedance (3-state) mode. |
| 14 | VCC | power_in | Positive supply pin. Recommended operating range 4.5 V to 5.5 V. Bypass with a 0.1 uF ceramic capacitor located close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |
Ordering variants
SN74AHCT126PWRSN74AHCT126PWRDSN74AHCT126PWRDBSN74AHCT126PWRDGVSN74AHCT126PWRNSN74AHCT126PWRNSSN74AHCT126PWRBQASN74AHCT126PWRJSN74AHCT126PWRWSN74AHCT126PWRFK
CAD (KiCad official)
- Symbol:
SN74AHCT126PWR - 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
db77dd13dae09d50, 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).
Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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