This document is the product specification for the 74F1604 Latch from Philips Semiconductors. The product features high impedance NPN base inputs, 16-bit wide data inputs, and multiplexed 8-bit outputs.
The Philips 74F1604 is a dual octal transparent latch organized as 8-bit A and B latches. Its outputs are connected by pairs to eight 2-input multiplexers, allowing data from either latch to be selected. Data enters the latch on the falling edge of the latch enable (LE) input, and the device remains transparent to data inputs while LE is low.
| Typical Propagation Delay | 7.0ns |
|---|---|
| Typical Supply Current | 70mA |
| Operating Free Air Temperature | 0°C to +70°C |
| Storage Temperature Range | -65 to +150 °C |
| Supply Voltage (Nominal) | 5.0 V |
| High-Level Input Voltage | 2.0 V |
| Low-Level Input Voltage | 0.8 V |
It determines whether the A or B latch contents are multiplexed to the eight outputs.
Data enters the latch on the falling edge of the latch enable (LE) input.
The maximum input current is 5 mA.