SN54AC533 Datasheet, PDF (1/6 Pages) Texas Instruments – OCTAL TRANSPARENT D-TYPE LATCHES WITH 3-STATE OUTPUTS

D 3-State Inverting Outputs Drive Bus Lines
Directly
D Full Parallel Access for Loading
D EPIC ™ (Enhanced-Performance Implanted
CMOS) 1-µm Process
D Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), Thin Shrink Small-Outline (PW),
Ceramic Chip Carriers (FK) and
Flatpacks (W), and Standard Plastic (N) and
Ceramic (J) DIPs
description
SN54AC533, SN74AC533
OCTAL TRANSPARENT D-TYPE LATCHES
WITH 3-STATE OUTPUTS
SCAS555A – NOVEMBER 1995 – REVISED MAY 1996
SN54AC533 . . . J OR W PACKAGE
SN74AC533 . . . DB, DW, N, OR PW PACKAGE
(TOP VIEW)
OE 1
1Q 2
1D 3
2D 4
2Q 5
3Q 6
3D 7
4D 8
4Q 9
GND 10
20 V_CC
19 8Q
18 8D
17 7D
16 7Q
15 6Q
14 6D
13 5D
12 5Q
11 LE
The ’AC533 are octal transparent D-type latches
with 3-state outputs. When the latch-enable (LE)
input is high, the Q outputs follow the
complements of the data (D) inputs. When LE is
taken low, the Q outputs are latched at the inverse
logic levels set up 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 need for interface or pullup
components.
SN54AC533 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
2D 4
18 8D
2Q 5
17 7D
3Q 6
16 7Q
3D 7
15 _6Q
4D ⁸
14 _6D
9 10 11 12 13
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 SN54AC533 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74AC533 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each latch)
INPUTS
OE LE
D
OUTPUT
Q
L
H
H
L
L
H
L
H
L
L
X
Q0
H
X
X
Z
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
EPIC is a trademark of Texas Instruments Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
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Copyright © 1996, Texas Instruments Incorporated
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