DM74LS573 Octal D Latch with TRI-STATE Outputs
June 1992
DM74LS573 Octal D Latch with TRI-STATE Outputs
General Description
The ’LS573 is a high speed octal latch with buffered common Latch Enable (LE) and buffered common Output Enable (OE) inputs This device is functionally identical to the ’LS373 but has different pinouts For truth tables discussion of operations and AC and DC specifications please refer to the ’LS373 www.DataSheet4U.com data sheet
Features
Y Y Y Y Y
Inputs and outputs on .
Octal D Latch
DM74LS573 Octal D Latch with TRI-STATE Outputs
June 1992
DM74LS573 Octal D Latch with TRI-STATE Outputs
General Description
The ’LS573 is a high speed octal latch with buffered common Latch Enable (LE) and buffered common Output Enable (OE) inputs This device is functionally identical to the ’LS373 but has different pinouts For truth tables discussion of operations and AC and DC specifications please refer to the ’LS373 www.DataSheet4U.com data sheet
Features
Y Y Y Y Y
Inputs and outputs on opposite sides of package allowing easy interface with microprocessors Useful as input or output port for microprocessors Functionally identical to ’LS373 Input clamp diodes limit high speed termination effects Fully TTL and CMOS compatible
Connection Diagram
Dual-In-Line Package
Logic Symbol
TL F 9814 – 2
VCC e Pin 20 GND e Pin 10
TL F 9814 – 1
Order Number DM74LS573WM or DM74LS573N See NS Package Number M20B or N20A
Pin Names D0–D7 LE OE O0–O7
Description Data Inputs Latch Enable Input (Active HIGH) TRI-STATE Output Enable Input (Active LOW) TRI-STATE Latch Outputs
Function Table
OUTPUT Enable L L L H
Z e High Impedance State QO e Previous Condition of O
TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 9814 RRD-B30M115 Printed in U S A
Latch Enable H H L X
D H L X X
Output O H L QO Z
L e Low State H e High State X e Don’t Care
Absolute Maximum Ratings (Note) If Military Aerospace specified devices ar.