| Integrated Circuits |
|---|
| 74597 |
|---|
| 8-bit shift register with input flip-flops |
| PDF datasheet |
| D1 | 1 • | 16 | Vcc |
| D2 | 2 | 15 | D0 |
| D3 | 3 | 14 | DS |
| D4 | 4 | 13 | PL |
| D5 | 5 | 12 | STCP |
| D6 | 6 | 11 | SHCP |
| D7 | 7 | 10 | MR |
| GND | 8 | 9 | Q |
| Pin | Symbol | Description |
|---|---|---|
| 1 | D1 | parallel data input |
| 2 | D2 | parallel data input |
| 3 | D3 | parallel data input |
| 4 | D4 | parallel data input |
| 5 | D5 | parallel data input |
| 6 | D6 | parallel data input |
| 7 | D7 | parallel data input |
| 8 | GND | ground |
| 9 | Q | serial data output |
| 10 | MR | asynchronous master reset (active low) |
| 11 | SHCP | shift clock input (low-to-high, edge-triggered) |
| 12 | STCP | storage clock input (low-to-high, edge-triggered) |
| 13 | PL | parallel load input (active low) |
| 14 | DS | serial data input |
| 15 | D0 | parallel data input |
| 16 | Vcc | supply voltage |
| Specifications |
|---|
| (typical values under recommended operating conditions, unless specified) |
| Parameter | Value | Unit |
|---|---|---|
| Propagation delay, SHCP to Q |
17 (74HC) 20 (74HCT) |
ns |
| Propagation delay, STCP to Q |
25 (74HC) 29 (74HCT) |
ns |
| Propagation delay, PL to Q |
21 (74HC) 26 (74HCT) |
ns |
| Maximum clock frequency, SHCP |
96 (74HC) 83 (74HCT) |
MHz |
| Note |
|---|
| Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information. |
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