Texas Instruments SN74AHCT16541DGGR, SN74AHCT16541DGVR, SN74AHCT16541DL, SN74AHCT16541DLR Datasheet
SN54AHCT16541, SN74AHCT16541
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS339H – MARCH 1996 – REVISED JANUARY 2000
D
Members of the Texas Instruments
D
Widebus
EPIC
Family
(Enhanced-Performance Implanted
CMOS) Process
D
Inputs Are TTL-Voltage Compatible
D
Distributed VCC and GND Pins Minimize
High-Speed Switching Noise
D
Flow-Through Architecture Optimizes PCB
Layout
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
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
description
The ’AHCT16541 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 both 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.
SN54AHCT16541 . . . WD PACKAGE
SN74AHCT16541 . . . DGG, DGV, OR DL PACKAGE
1OE1
1Y1
1Y2
GND
1Y3
1Y4
V
CC
1Y5
1Y6
GND
1Y7
1Y8
2Y1
2Y2
GND
2Y3
2Y4
V
CC
2Y5
2Y6
GND
2Y7
2Y8
2OE1
(TOP VIEW)
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
V
CC
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
V
CC
2A5
2A6
GND
2A7
2A8
2OE2
T o 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 SN54AHCT16541 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHCT16541 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 8-bit buffer/driver)
INPUTS
OE2 A
OE1
L L L L
L LH H
H XX 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.
OUTPUT
Y
Copyright 2000, Texas Instruments Incorporated
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
1
SN54AHCT16541, SN74AHCT16541
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS339H – MARCH 1996 – REVISED JANUARY 2000
logic symbol
†
1OE1
1OE2
2OE1
2OE2
1
48
24
25
47
1A1 1Y1
46
1A2
44
1A3 1Y3
43
1A4 1Y4
41
1A5 1Y5
40
1A6 1Y6
38
1A7 1Y7
37
1A8 1Y8
36
2A1 2Y1
35
2A2
33
2A3 2Y3
32
2A4 2Y4
30
2A5 2Y5
29
2A6 2Y6
27
2A7
26
2A8 2Y8
&
&
EN1
EN2
111
2
3
1Y2
5
6
8
9
11
12
2
13
14
16
17
19
20
22
23
2Y2
2Y7
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
1
1OE1
48
1OE2
47
1A1 1Y1
To Seven Other Channels To Seven Other Channels
2
2OE1
2OE2
2A1
24
25
36
13
2Y1
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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