SN54ABT16244, SN74ABT16244A
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
www.ti.com
SCBS073H–SEPTEMBER 1991–REVISED AUGUST 2005
FEATURES
SN54ABT16244. . . WD PACKAGE
SN74ABT16244A. . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
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Members of the Texas Instruments
Widebus™ Family
State-of-the-Art EPIC-IIB™ BiCMOS Design
Significantly Reduces Power Dissipation
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1Y1
1Y2
GND
1Y3
1Y4
2OE
1A1
1A2
GND
1A3
1A4
2
Latch-Up Performance Exceeds 500 mA Per
JESD 70
3
4
Typical VOLP (Output Ground Bounce) <1 V
at VCC = 5 V, TA = 25°C
5
6
Distributed VCC and GND Pin Configuration
Minimizes High-Speed Switching Noise
7
V
CC
V
CC
8
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
Flow-Through Architecture Optimizes PCB
Layout
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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High-Drive Outputs (–32-mA IOH, 64-mA IOL)
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL), Thin Shrink
Small-Outline (DGG), and Thin Very
Small-Outline (DGV) Packages and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
Using 25-mil Center-to-Center Spacings
V
CC
V
CC
4Y1
4Y2
GND
4Y3
4Y4
4OE
4A1
4A2
GND
4A3
4A4
3OE
DESCRIPTION
The SN54ABT16244 and SN74ABT16244A 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. These
devices can be used as four 4-bit buffers, two 8-bit
buffers, or one 16-bit buffer. These devices provide
true outputs and symmetrical OE (active-low
output-enable) inputs.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT16244 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74ABT16244A is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(EACH BUFFER)
INPUTS
OUTPUT
Y
OE
A
H
L
L
L
H
L
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.
Widebus, EPIC-IIB are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 1991–2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
On products compliant to MIL-PRF-38535, all parameters are
Instruments standard warranty. Production processing does not
tested unless otherwise noted. On all other products, production
necessarily include testing of all parameters.
processing does not necessarily include testing of all parameters.