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Features

? Common Latch-Enable Control

? Common Three-State Output Enable Control

? Buffered Inputs

? Three-State Outputs

? Bus Line Driving Capacity

? Typical Propagation Delay = 13ns at VCC = 5V,

CL = 15pF, TA = 25oC (Data to Output)

? Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

? Wide Operating Temperature Range . . . -55oC to 125oC

? Balanced Propagation Delay and Transition Times

? Significant Power Reduction Compared to LSTTL

Logic ICs

? HC Types

- 2V to 6V Operation

- High Noise Immunity: NIL = 30%, NIH = 30% of VCC

at VCC = 5V

? HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH

Description

The ’HC533, ’HCT533, ’HC563, and CD74HCT563 are

high-speed Octal Transparent Latches manufactured with

silicon gate CMOS technology. They possess the low power

consumption of standard CMOS integrated circuits, as well as

the ability to drive 15 LSTTL devices.

The outputs are transparent to the inputs when the latch

enable (LE) is high. When the latch enable (LE) goes low the

data is latched. The output enable (OE) controls the

three-state outputs. When the output enable (OE) is high the

outputs are in the high impedance state. The latch operation

is independent of the state of the output enable.

The ’HC533 and ’HCT533 are identical in function to the

’HC563 and CD74HCT563 but have different pinouts. The

’HC533 and ’HCT533 are similar to the ’HC373 and ’HCT373;

the latter are non-inverting types.