74AC16240 Datasheet, PDF (1/9 Pages) Texas Instruments – 16-BIT BUS DRIVERS WITH 3-STATE OUTPUTS

54AC16240, 74AC16240
16ĆBIT BUS DRIVERS
WITH 3ĆSTATE OUTPUTS
SCAS234B − JULY 1990 − REVISED OCTOBER 1996
D Members of the Texas Instruments
Widebus  Family
D 3-State Outputs Drive Bus Lines or Buffer
Memory Address Registers
D Flow-Through Architecture Optimizes PCB
Layout
D Distributed V_CC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D EPIC (Enhanced-Performance Implanted
CMOS) 1-µm Process
D 500-mA Typical Latch-Up Immunity at
125°C
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) Package Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Package Using 25-mil Center-to-Center Pin
Spacings
description
The ’AC16240 are 16-bit buffers and line drivers
designed specifically to improve both the
performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented
receivers and transmitters.
They can be used as four 4-bit buffers, two 8-bit
buffers, or one 16-bit buffer. These devices
provide inverting outputs and symmetrical
active-low output-enable (OE) inputs.
54AC16240 . . . WD PACKAGE
74AC16240 . . . DL PACKAGE
(TOP VIEW)
1OE 1
1Y1 2
1Y2 3
GND 4
1Y3 5
1Y4 6
V_CC 7
2Y1 8
2Y2 9
GND 10
2Y3 11
2Y4 12
3Y1 13
3Y2 14
GND 15
3Y3 16
3Y4 17
V_CC 18
4Y1 19
4Y2 20
GND 21
4Y3 22
4Y4 23
4OE 24
48 2OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 3A1
35 3A2
34 GND
33 3A3
32 3A4
31 V_CC
30 4A1
29 4A2
28 GND
27 4A3
26 4A4
25 3OE
The 74AC16240 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and
functionality of standard small-outline packages in the same printed circuit board area.
The 54AC16240 is characterized for operation over the full military temperature range of −55°C to 125°C.
The 74AC16240 is characterized for operation from −40°C to 85°C.
FUNCTION TABLE
(each 4-bit buffer)
INPUTS
OE
A
L
H
L
L
H
X
OUTPUT
Y
L
H
Z
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.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
Copyright  1996, Texas Instruments Incorporated
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