SN74AC563 Datasheet, PDF (1/13 Pages) Texas Instruments – OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS

D 2-V to 6-V V_CC Operation
D Inputs Accept Voltages to 6 V
D Max t_pd of 9 ns at 5 V
D 3-State Inverting Outputs Drive Bus Lines
Directly
D Full Parallel Access for Loading
D Flow-Through Architecture to Optimize
PCB Layout
description/ordering information
The ’AC563 devices are octal D-type transparent
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 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.
OE does not affect 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.
SN54AC563, SN74AC563
OCTAL DĆTYPE TRANSPARENT LATCHES
WITH 3ĆSTATE OUTPUTS
SCAS552C − NOVEMBER 1995 − REVISED OCTOBER 2003
SN54AC563 . . . J OR W PACKAGE
SN74AC563 . . . DB, DW, N, NS, 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
SN54AC563 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
3D 4
18 2Q
4D 5
17 3Q
5D 6
16 4Q
6D 7
15 5Q
7D 8
14 6Q
9 10 11 12 13
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube
SN74AC563N
SN74AC563N
SOIC − DW
Tube
Tape and reel
SN74AC563DW
SN74AC563DWR
AC563
−40°C to 85°C
SOP − NS
SSOP − DB
Tape and reel
Tape and reel
SN74AC563NSR
SN74AC563DBR
AC563
AC563
TSSOP − PW
Tube
Tape and reel
SN74AC563PW
SN74AC563PWR
AC563
CDIP − J
Tube
SNJ54AC563J
SNJ54AC563J
−55°C to 125°C CFP − W
Tube
SNJ54AC563W
SNJ54AC563W
LCCC − FK
Tube
SNJ54AC563FK
SNJ54AC563FK
† _{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.
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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