Texas Instruments SN74145N, 7400 series Decoder, 1 x 4:10 circuit, Through Hole 16-DIP (0.300", 7.62mm), 4.75V ~ 5.25V supply, 0°C ~ 70°C, 80 mA low-level output.
| Parameter | Value |
|---|---|
| Type | Decoder |
| Series | 7400 |
| Mounting | Through Hole |
| Supply voltage | 4.75V ~ 5.25V |
| Voltage supply source | Single Supply |
| Current - output high, low | -, 80mA |
| Operating temperature | 0°C ~ 70°C |
| Circuit | 1 x 4:10 |
| Package | Tube |
| Case | 16-DIP (0.300\", 7.62mm) |
| Independent circuits | 1 |
The SN74145N is a 7400-series TTL decoder that takes a 4-bit BCD input and drives one of ten active-low outputs low. It is a single-supply device operating from 4.75 V to 5.25 V, in a 16-pin DIP package for through-hole assembly.
The output is rated for 80 mA low-level current (sinking), with no specified high-level source current. That means this decoder is designed to drive loads referenced to ground — relays, LED anodes, or logic inputs — by pulling them low.
It is a 1-of-10 BCD-to-decimal decoder, used to convert a 4-bit BCD input into one of ten active-low outputs. Typical applications include driving indicator lamps, relay coils, or enabling peripheral logic in 5 V TTL systems.