74ACT16540_10 Datasheet, PDF (1/6 Pages) Texas Instruments – 16-Bit Inverting Buffer/Line Driver with 3-STATE Outputs

54ACT16540, 74ACT16540
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCAS186A − OCTOBER 1991 − REVISED APRIL 1996
D Members of the Texas Instruments
Widebus™ Family
D Inputs Are TTL-Voltage Compatible
D Provide Extra Data Width Necessary for
Wider Address/Data Paths
D Provide Inverted Data
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 Shrink
Small-Outline 300-mil (DL) Package Using
25-mil Center-to-Center Pin Spacings and
380-mil Fine-Pitch Ceramic Flat (WD)
Packages Using 25-mil Center-to-Center
Pin Spacings
description
These 16-bit buffers/bus drivers provide a
high-performance bus interface for wide data
paths.
54ACT16540 . . . WD PACKAGE
74ACT16540 . . . DL PACKAGE
(TOP VIEW)
1OE1 1
1Y1 2
1Y2 3
GND 4
1Y3 5
1Y4 6
V_CC 7
1Y5 8
1Y6 9
GND 10
1Y7 11
1Y8 12
2Y1 13
2Y2 14
GND 15
2Y3 16
2Y4 17
V_CC 18
2Y5 19
2Y6 20
GND 21
2Y7 22
2Y8 23
2OE1 24
48 1OE2
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V_CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OE2
The 3-state control gate is a 2-input AND gate with
active-low inputs so that if either output-enable
(OE1 or OE2) input is high, all corresponding
outputs are in the high-impedance state.
The 74ACT16540 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 54ACT16540 is characterized for operation over the full military temperature range of −55°C to 125°C. The
74ACT16540 is characterized for operation from −40°C to 85°C.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE1 OE2 A
OUTPUT
Y
L
L
L
H
L
L
H
L
H
X
X
Z
X
H
X
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
Copyright © 1996, Texas Instruments Incorporated
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