SN54ABT162823A_15 Datasheet, PDF (1/13 Pages) Texas Instruments – 18-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS

D Members of the Texas Instruments
Widebus  Family
D Output Ports Have Equivalent 25-Ω Series
Resistors So No External Resistors Are
Required
D Typical V_OLP (Output Ground Bounce)
<1 V at V_CC = 5 V, T_A = 25°C
D High-Impedance State During Power Up
and Power Down
D I_off and Power-Up 3-State Support Hot
Insertion
D Distributed V_CC and GND Pins Minimize
High-Speed Switching Noise
D Flow-Through Architecture Optimizes PCB
Layout
description/ordering information
These 18-bit bus-interface flip-flops feature
3-state outputs designed specifically for driving
highly capacitive or relatively low-impedance
loads. They are particularly suitable for
implementing wider buffer registers, I/O ports,
bidirectional bus drivers with parity, and working
registers.
The ’ABT162823A devices can be used as two
9-bit flip-flops or one 18-bit flip-flop. With the
clock-enable (CLKEN) input low, the D-type
flip-flops enter data on the low-to-high transitions
of the clock. Taking CLKEN high disables the
clock buffer, thus latching the outputs. Taking the
clear (CLR) input low causes the Q outputs to go
low independently of the clock.
SN54ABT162823A, SN74ABT162823A
18ĆBIT BUSĆINTERFACE FLIPĆFLOPS
WITH 3ĆSTATE OUTPUTS
SCBS666B − JULY 1996 − REVISED JUNE 2004
SN54ABT162823A . . . WD PACKAGE
SN74ABT162823A . . . DGG OR DL PACKAGE
(TOP VIEW)
1CLR 1
1OE 2
1Q1 3
GND 4
1Q2 5
1Q3 6
V_CC 7
1Q4 8
1Q5 9
1Q6 10
GND 11
1Q7 12
1Q8 13
1Q9 14
2Q1 15
2Q2 16
2Q3 17
GND 18
2Q4 19
2Q5 20
2Q6 21
V_CC 22
2Q7 23
2Q8 24
GND 25
2Q9 26
2OE 27
2CLR 28
56 1CLK
55 1CLKEN
54 1D1
53 GND
52 1D2
51 1D3
50 V_CC
49 1D4
48 1D5
47 1D6
46 GND
45 1D7
44 1D8
43 1D9
42 2D1
41 2D2
40 2D3
39 GND
38 2D4
37 2D5
36 2D6
35 V_CC
34 2D7
33 2D8
32 GND
31 2D9
30 2CLKEN
29 2CLK
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
−40°C to 85°C
SSOP − DL
TSSOP − DGG
Tube
Tape and reel
Tape and reel
SN74ABT162823ADL
SN74ABT162823ADLR
SN74ABT162823ADGGR
ABT162823A
ABT162823A
−55°C to 125°C CFP − WD
Tube
SNJ54ABT162823AWD SNJ54ABT162823AWD
† _{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.
Widebus is a trademark of Texas Instruments.
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  2004, Texas Instruments Incorporated
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