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SCAS555C − NOVEMBER 1995 − REVISED OCTOBER 2003
SN54AC533 . . . J OR W PACKAGE
SN74AC533 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
D
D
D
D
2-V to 6-V V
Operation
CC
Inputs Accept Voltages to 6 V
Max t of 10.5 ns at 5 V
pd
3-State Inverting Outputs Drive Bus Lines
Directly
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
1Q
1D
2D
2Q
3Q
3D
4D
4Q
V
CC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
LE
D
Full Parallel Access for Loading
description/ordering information
The ’AC533 devices 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.
GND
SN54AC533 . . . FK PACKAGE
(TOP VIEW)
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 the
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.
3
2 1 20 19
18
8D
7D
7Q
6Q
6D
2D
2Q
3Q
3D
4D
4
5
6
7
8
17
16
15
14
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.
To ensure the high-impedance state during power up or power down, OE should be tied to V
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
through a pullup
CC
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
PDIP − N
Tube
SN74AC533N
SN74AC533N
Tube
SN74AC533DW
SN74AC533DWR
SN74AC533NSR
SN74AC533DBR
SN74AC533PW
SN74AC533PWR
SNJ54AC533J
SOIC − DW
AC533
Tape and reel
Tape and reel
Tape and reel
Tube
SOP − NS
AC533
AC533
−40°C to 85°C
−55°C to 125°C
SSOP − DB
TSSOP − PW
AC533
Tape and reel
Tube
CDIP − J
CFP − W
LCCC − FK
SNJ54AC533J
SNJ54AC533W
SNJ54AC533FK
Tube
SNJ54AC533W
SNJ54AC533FK
Tube
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
Copyright 2003, Texas Instruments Incorporated
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1
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