SN54AHC16244 Datasheet, PDF (1/12 Pages) Texas Instruments – 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

SN54AHC16244, SN74AHC16244
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS327G – MARCH 1996 – REVISED JANUARY 2000
D Members of the Texas Instruments
Widebus ™ Family
D EPIC ™ (Enhanced-Performance Implanted
CMOS) Process
D Operating Range 2-V to 5.5-V V_CC
D Distributed V_CC 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 ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
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 ’AHC16244 devices are 16-bit buffers and
line drivers designed specifically to improve the
performance and density of 3-state memory
address drivers, clock drivers, and bus-oriented
receivers and transmitters.
SN54AHC16244 . . . WD PACKAGE
SN74AHC16244 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1OE 1
1Y1 2
1Y2 3
GND 4
1Y3 5
1Y4 6
V_CC 7
2Y1 8
2Y2 9
GND ¹⁰
2Y3 11
2Y4 12
3Y1 ¹³
3Y2 ¹⁴
GND ¹⁵
3Y3 ¹⁶
3Y4 ¹⁷
V_CC ¹⁸
4Y1 ¹⁹
4Y2 ²⁰
GND ²¹
4Y3 ²²
4Y4 ²³
4OE ²⁴
48 2OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 2A1
40 2A2
39 _GND
38 2A3
37 2A4
36 _3A1
35 _3A2
34 _GND
33 _3A3
32 _3A4
31 _VCC
30 _4A1
29 _4A2
28 _GND
27 _4A3
26 _4A4
25 _3OE
These devices can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. They provide true outputs
and symmetrical active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54AHC16244 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHC16244 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 4-bit buffer/driver)
INPUTS
OE
A
OUTPUT
Y
L
H
H
L
L
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.
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 © 2000, Texas Instruments Incorporated
1