SN54ACT564_08 Datasheet, PDF (1/15 Pages) Texas Instruments – OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS WITH 3-STATE OUTPUTS

SN54ACT564, SN74ACT564
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS549B – NOVEMBER 1995 – REVISED NOVEMBER 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
D Full Parallel Access for Loading
description/ordering information
The ’ACT564 devices are octal D-type
edge-triggered flip-flops that feature 3-state
outputs designed specifically for driving highly
capacitive or relatively low-impedance loads.
They are particularly suitable for implementing
buffer registers, I/O ports, bidirectional bus
drivers, and working registers.
On the positive transition of the clock (CLK) input,
the Q outputs are set to the complements of the
logic levels set up at the data (D) inputs.
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 drive
provide the capability to drive bus lines without
interface or pullup components.
SN54ACT564 . . . J OR W PACKAGE
SN74ACT564 . . . 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 CLK
SN54ACT564 . . . 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
SN74ACT564N
SN74ACT564N
–40°C to 85°C
SOIC – DW
SOP – NS
Tube
Tape and reel
Tape and reel
SN74ACT564DW
SN74ACT564DWR
SN74ACT564NSR
ACT564
ACT564
SSOP – DB
Tape and reel SN74ACT564DBR
AD564
TSSOP – PW
Tape and reel SN74ACT564PWR
AD564
CDIP – J
–55°C to 125°C CFP – W
Tube
Tube
SNJ54ACT564J
SNJ54ACT564W
SNJ54ACT564J
SNJ54ACT564W
LCCC – FK
Tube
SNJ54ACT564FK
SNJ54ACT564FK
† _{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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Copyright  2002, Texas Instruments Incorporated
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