SN54AHC16244, SN74AHC16244
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS

SCLS327G – MARCH 1996 – REVISED JANUARY 2000
1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
C0068 Members of the Texas Instruments
Widebus Family
C0068 EPIC  (Enhanced-Performance Implanted
CMOS) Process
C0068 Operating Range 2-V to 5.5-V V
CC
C0068 Distributed V
CC
and GND Pins Minimize
High-Speed Switching Noise
C0068 Flow-Through Architecture Optimizes PCB
Layout
C0068 Latch-Up Performance Exceeds 250 mA Per
JESD 17
C0068 ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
C0068 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.
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
OUTPUT
OE A
Y
L H H
L LL
H X Z
Copyright  2000, 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.
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.
SN54AHC16244 . . . WD PACKAGE
SN74AHC16244 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
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22
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48
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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