Datasheet
SN74ALB16244
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS
SCBS647C – AUGUST 1995 – REVISED JULY 1997
8–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Member of the Texas Instruments
Widebus Family
D State-of-the-Art Advanced Low-Voltage
BiCMOS (ALB) Technology Design for 3.3-V
Operation
D Schottky Diodes on All Inputs to Eliminate
Overshoot and Undershoot
D Industry Standard ’16244 Pinout
D Distributed V
CC
and GND Pin Configuration
Minimizes High-Speed Switching Noise
D Flow-Through Architecture Optimizes PCB
Layout
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages
description
The SN74ALB16244 16-bit buffer and line driver
is designed for high-speed, low-voltage (3.3-V)
V
CC
operation. This device is intended to replace
the conventional driver in any speed-critical path.
The small propagation delay is achieved using a
unity gain amplifier on the input and feedback
resistors from input to output, which allows the
output to track the input with a small offset voltage.
The device can be used as four 4-bit buffers, two
8-bit buffers, or one 16-bit buffer. This device
provides true outputs and symmetrical active-low
output-enable (OE
) inputs.
The SN74ALB16244 is characterized for
operation from –40°C to 85°C.
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE
A
Y
L H H
L LL
H X Z
DGG OR DL PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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
V
CC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
V
CC
4Y1
4Y2
GND
4Y3
4Y4
4OE
2OE
1A1
1A2
GND
1A3
1A4
V
CC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
V
CC
4A1
4A2
GND
4A3
4A4
3OE
Copyright 1997, Texas Instruments Incorporated
PRODUCTION DATA information is 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.
Widebus is a trademark of Texas Instruments Incorporated.