Product Summary

The HC573A is an octal transparent D-type latch. It features 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. HC573A is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

Parametrics

HC573A absolute maximum ratings: (1)Supply voltage range, VCC: -0.5 V to 7 V; (2)Input clamp current, IIK (VI < 0 or VI > VCC): ±20 mA; (3)Output clamp current, IOK (VO < 0 or VO > VCC): ±20 mA; (4)Continuous output current, IO (VO = 0 to VCC): ±35 mA; (5)Continuous current through VCC or GND: ±70 mA; (6)Package thermal impedance, θJA (see Note 2): DB package: 70℃/W; DW package: 58℃/W; N package: 69℃/W; PW package: 83℃/W; (7)Storage temperature range, Tstg: -65℃ to 150℃.

Features

HC573A features: (1)Wide Operating Voltage Range of 2 V to 6 V; (2)High-Current 3-State Outputs Drive Bus Lines Directly or Up To 15 LSTTL Loads; (3)Low Power Consumption, 80-μA Max ICC; (4)Typical tpd = 21 ns; (5)±6-mA Output Drive at 5 V; (6)Low Input Current of 1 μA Max; (7)Bus-Structured Pinout.

Diagrams

HC573A logic diagram