74AHCT125 - Quad Level-Shifter (3V to 5V)
74AHCT125 quad level shifter for converting 3V logic signals up to 5V logic in mixed-voltage circuits.
Pinout
- 1OEDIP pin 1
Output enable for buffer 1, active low
Type · Control - 1ADIP pin 2
Buffer 1 data input
Type · Unknown - 1YDIP pin 3
Buffer 1 data output
Type · Unknown - 2OEDIP pin 4
Output enable for buffer 2, active low
Type · Control - 2ADIP pin 5
Buffer 2 data input
Type · Unknown - 2YDIP pin 6
Buffer 2 data output
Type · Unknown - GNDDIP pin 7
Ground
Type · GroundVoltage · 0V - 3YDIP pin 8
Buffer 3 data output
Type · Unknown - 3ADIP pin 9
Buffer 3 data input
Type · Unknown - 3OEDIP pin 10
Output enable for buffer 3, active low
Type · Control - 4YDIP pin 11
Buffer 4 data output
Type · Unknown - 4ADIP pin 12
Buffer 4 data input
Type · Unknown - 4OEDIP pin 13
Output enable for buffer 4, active low
Type · Control - VCCDIP pin 14
Supply voltage
Type · PowerVoltage · 4.5-5.5V
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| 1OE | DIP pin 1 | Control | Output enable for buffer 1, active low | |
| 1A | DIP pin 2 | Unknown | Buffer 1 data input | |
| 1Y | DIP pin 3 | Unknown | Buffer 1 data output | |
| 2OE | DIP pin 4 | Control | Output enable for buffer 2, active low | |
| 2A | DIP pin 5 | Unknown | Buffer 2 data input | |
| 2Y | DIP pin 6 | Unknown | Buffer 2 data output | |
| GND | DIP pin 7 | Ground | Ground | 0V |
| 3Y | DIP pin 8 | Unknown | Buffer 3 data output | |
| 3A | DIP pin 9 | Unknown | Buffer 3 data input | |
| 3OE | DIP pin 10 | Control | Output enable for buffer 3, active low | |
| 4Y | DIP pin 11 | Unknown | Buffer 4 data output | |
| 4A | DIP pin 12 | Unknown | Buffer 4 data input | |
| 4OE | DIP pin 13 | Control | Output enable for buffer 4, active low | |
| VCC | DIP pin 14 | Power | Supply voltage | 4.5-5.5V |
Pin details
14 connections- 1OEDIP pin 1
Output enable for buffer 1, active low
Control - 1ADIP pin 2
Buffer 1 data input
Unknown - 1YDIP pin 3
Buffer 1 data output
Unknown - 2OEDIP pin 4
Output enable for buffer 2, active low
Control - 2ADIP pin 5
Buffer 2 data input
Unknown - 2YDIP pin 6
Buffer 2 data output
Unknown - GNDDIP pin 7
Ground
GroundVoltage · 0V - 3YDIP pin 8
Buffer 3 data output
Unknown - 3ADIP pin 9
Buffer 3 data input
Unknown - 3OEDIP pin 10
Output enable for buffer 3, active low
Control - 4YDIP pin 11
Buffer 4 data output
Unknown - 4ADIP pin 12
Buffer 4 data input
Unknown - 4OEDIP pin 13
Output enable for buffer 4, active low
Control - VCCDIP pin 14
Supply voltage
PowerVoltage · 4.5-5.5V
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