SN54AHC16245 Datasheet, PDF (1/7 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

SN54AHC16245, SN74AHC16245
16-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS328C – MARCH 1996 – REVISED JULY 1998
D Members of the Texas Instruments
Widebus ™ Family
D Operating Range 2-V to 5.5-V V_CC
D EPIC ™ (Enhanced-Performance Implanted
CMOS) Process
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
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 ’AHC16245 devices are 16-bit (dual-octal)
noninverting 3-state transceivers designed for
synchronous two-way communication between
data buses. The control-function implementation
minimizes external timing requirements.
These devices can be used as two 8-bit
transceivers or one 16-bit transceiver. They allow
data transmission from the A bus to the B bus or
from the B bus to the A bus, depending on the logic
level at the direction-control (DIR) input. The
output-enable (OE) input can be used to disable
the device so that the buses are effectively
isolated.
SN54AHC16245 . . . WD PACKAGE
SN74AHC16245 . . . DGG, DGV, OR DL PACKAGE
(TOP VIEW)
1DIR 1
1B1 2
1B2 3
GND 4
1B3 5
1B4 6
V_CC 7
1B5 8
1B6 9
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
V_CC 18
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2DIR 24
48 1OE
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
42 V_CC
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
31 V_CC
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25 2OE
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 SN54AHC16245 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74AHC16245 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OE DIR
OPERATION
L
L
B data to A bus
L
H A data to B bus
H
X
Isolation
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.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
Copyright © 1998, Texas Instruments Incorporated
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