SN54164

These SN54164 8-bit shift registers feature gated serial inputs and an asynchronous clear. The gated serial inputs (A and B) permit complete control over incoming data as a low at either input inhibits entry of the new data and resets the first flip-flop to the low level at the next clock pulse. A high-level input enables the other input which will then determine the state of the first flip-flop. Data at the serial inputs may be changed while the clock is high or low, but only information meeting the setup-time requirements will be entered. Clocking occurs on the low-to-high-level transition of the clock input. All inputs are diode-clamped to minimize transmission-line effects.

The SN54164 and SN54LS164 are characterized for operation over the full military temperature range of - 55°C to 125°C. The SN74164 and SN74LS164 are characterized for operation from 0°C to 70°C. The features of SN54164 can be summarized as (1); (2)gated serial inputs; (3)fully buffered clock and serial inputs; (4)asynchronous clear.

The absolute maximum ratings over oprating free-air temperature(unless other noted) of SN54164 are (1)range (unless otherwise noted); (2)supply voltage, VCC (see Note 1: voltage values are with respect to network ground terminal): 7V; (3)input voltage: 5.5V; (4)operating free-air temperature range: SN54164: -55 to 125°C, SN74164 0°C to 70°C; (5)storage temperature range: -65°C to 150°C.