| 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 |
| ICC (Max) (uA) | 85000 |
| Features | High speed (tpd 10-50ns) |
- 8-Bit Parallel Storage Register Inputs ('LS597)
- Parallel 3-State I/O, Storage Register Inputs, Shift Register Outputs ('LS598)
- Shift Register has Direct Overriding Load and Clear
- Accurate Shift-Frequency … DC to 20 MHz
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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.
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