74HC573 Octal Transparent D-Type Latch with 3-State Outputs
Octal transparent D-type latch with 3-state outputs and flow-through pinout architecture, ideal for driving bus lines or memory address latches.
Aliase:SN74HC573N, 74573, 74HCT573, Octal Latch
DIP-20 / SOIC-20 Top View
20 Pins
Pinout Table20
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | ~OE | Digital | Output Enable (Active Low — HIGH = all outputs Hi-Z) |
| 2 | D0 | Digital | Data Input 0 |
| 3 | D1 | Digital | Data Input 1 |
| 4 | D2 | Digital | Data Input 2 |
| 5 | D3 | Digital | Data Input 3 |
| 6 | D4 | Digital | Data Input 4 |
| 7 | D5 | Digital | Data Input 5 |
| 8 | D6 | Digital | Data Input 6 |
| 9 | D7 | Digital | Data Input 7 |
| 10 | GND | Ground | Ground (0V) |
| 11 | LE | Digital | Latch Enable (Active High — HIGH = transparent/follow D; LOW = outputs hold last state) |
| 12 | Q7 | Digital | 3-State Latch Output 7 |
| 13 | Q6 | Digital | 3-State Latch Output 6 |
| 14 | Q5 | Digital | 3-State Latch Output 5 |
| 15 | Q4 | Digital | 3-State Latch Output 4 |
| 16 | Q3 | Digital | 3-State Latch Output 3 |
| 17 | Q2 | Digital | 3-State Latch Output 2 |
| 18 | Q1 | Digital | 3-State Latch Output 1 |
| 19 | Q0 | Digital | 3-State Latch Output 0 |
| 20 | VCC | Power | Supply Voltage (2.0V to 6.0V DC) |