SN54AHC16541, SN74AHC16541
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS332D – MARCH 1996 – REVISED JULY 1998
D
D
D
D
D
D
D
SN54AHC16541 . . . WD PACKAGE
SN74AHC16541 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Members of the Texas Instruments
Widebus ™ Family
Operating Range 2-V to 5.5-V VCC
EPIC ™ (Enhanced-Performance Implanted
CMOS) Process
Distributed VCC and GND Pin Configuration
Minimizes High-Speed Switching Noise
Flow-Through Architecture Optimizes PCB
Layout
Latch-Up Performance Exceeds 250 mA Per
JESD 17
Package Options Include Plastic
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
1OE1
1Y1
1Y2
GND
1Y3
1Y4
VCC
1Y5
1Y6
GND
1Y7
1Y8
2Y1
2Y2
GND
2Y3
2Y4
VCC
2Y5
2Y6
GND
2Y7
2Y8
2OE1
description
The ’AHC16541 devices are noninverting 16-bit
buffers composed of two 8-bit sections with
separate output-enable signals. For either 8-bit
buffer section, the two output-enable (1OE1 and
1OE2 or 2OE1 and 2OE2) inputs must be low for
the corresponding Y outputs to be active. If either
output-enable input is high, the outputs of that
8-bit buffer section are in the high-impedance
state.
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
1OE2
1A1
1A2
GND
1A3
1A4
VCC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
VCC
2A5
2A6
GND
2A7
2A8
2OE2
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 SN54AHC16541 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHC16541 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
L
L
L
H
H
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.
Copyright © 1998, 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
1
