The 'LS597 comes in a 16-pin package and consists of an 8-bit storage latch feeding a parallel-in, serial-out 8-bit shift register. Both the storage register and shift register have positive-edge triggered clocks. The shift register also has direct load (from storage) and clear inputs.
The 'LS598 comes in a 20-pin package and has all the features of the 'LS597 plus 3-state I/O ports that provide parallel shift register outputs and also has multiplexed serial data inputs.
| Configuration | Parallel-in, Serial-out |
| Bits (#) | 8 |
| Technology family | LS |
| Supply voltage (min) (V) | 4.75 |
| Supply voltage (max) (V) | 5.25 |
| Input type | Bipolar |
| Output type | Push-Pull |
| Clock frequency (MHz) | 25 |
| IOL (max) (mA) | 24 |
| IOH (max) (mA) | -2.6 |
| Supply current (max) (µA) | 85000 |
| Features | High speed (tpd 10-50ns) |
| Operating temperature range (°C) | 0 to 70 |
| Rating | Catalog |
| PDIP (N) | 20 | 228.702 mm² 24.33 x 9.4 |
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