SN74LVC573 Datasheet, PDF (1/6 Pages) Texas Instruments – OCTAL TRANSPARENT D-TYPE LATCH WITH 3-STATE OUTPUTS

SN74LVC573
OCTAL TRANSPARENT D-TYPE LATCH
WITH 3-STATE OUTPUTS
SCAS300A – JANUARY 1993 – REVISED NOVEMBER 1994
• EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
• Typical V_OLP (Output Ground Bounce)
< 0.8 V at V_CC = 3.3 V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
> 2 V at V_CC = 3.3 V, T_A = 25°C
• Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
DB, DW, OR PW PACKAGE
(TOP VIEW)
OE ₁
1D ₂
2D 3
3D 4
4D 5
5D 6
6D 7
7D 8
8D 9
GND 10
20 ^V_CC
19 ^1Q
18 2Q
17 3Q
16 4Q
15 5Q
14 6Q
13 7Q
12 8Q
11 LE
This octal transparent D-type latch is designed for
2.7-V to 3.6-V V_CC operation.
The SN74LVC573 features 3-state outputs designed specifically for driving highly capacitive or relatively
low-impedance loads. It is particularly suitable for implementing buffer registers, input/output (I/O) ports,
bidirectional bus drivers, and working registers.
While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the
Q outputs are latched at the logic levels at the D inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high
or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive
the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus
lines without the need for interface or pullup components.
OE does not affect the internal operations of the latches. Old data can be retained or new data can be entered
while the outputs are in the high-impedance state.
The SN74LVC573 is characterized for operation from – 40°C to 85°C.
FUNCTION TABLE
(each latch)
INPUTS
OE LE
D
OUTPUT
Q
L
H
H
H
L
H
L
L
L
L
X
Q0
H
X
X
Z
EPIC is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1994, Texas Instruments Incorporated
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