SN54ACT563_07 Datasheet, PDF (1/11 Pages) Texas Instruments – OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS

SN54ACT563, SN74ACT563
OCTAL D-TYPE TRANSPARENT LATCHES
WITH 3-STATE OUTPUTS
SCAS550B – NOVEMBER 1995 – REVISED OCTOBER 2002
D 4.5-V to 5.5-V V_CC Operation
D Inputs Accept Voltages to 5.5 V
D Max t_pd of 8.5 ns at 5 V
D Inputs Are TTL-Voltage Compatible
D 3-State Inverted Outputs Drive Bus Lines
Directly
D Flow-Through Architecture to Optimize
PCB Layout
description/ordering information
The ’ACT563 devices are octal D-type
transparent latches with 3-state outputs. When
the latch-enable (LE) input is high, the Q outputs
are set to 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.
SN54ACT563 . . . J OR W PACKAGE
SN74ACT563 . . . 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
SN54ACT563 . . . FK PACKAGE
(TOP VIEW)
A buffered output-enable (OE) input places 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 high logic
level provide the capability to drive bus lines
without interface or pullup components.
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
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.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP – N
Tube
SN74ACT563N
SN74ACT563N
–40°C to 85°C
SOIC – DW
SOP – NS
Tube
Tape and reel
Tape and reel
SN74ACT563DW
SN74ACT563DWR
SN74ACT563NSR
ACT563
ACT563
SSOP – DB
Tape and reel SN74ACT563DBR
AD563
TSSOP – PW
Tape and reel SN74ACT563PWR
AD563
CDIP – J
Tube
SNJ54ACT5634J
SNJ54ACT563J
–55°C to 125°C CFP – W
Tube
SNJ54ACT563W
SNJ54ACT563W
LCCC – FK
Tube
SNJ54ACT563FK
SNJ54ACT563FK
† _{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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