Datasheet
SN74ALVCH16863
18-BIT TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES060B – DECEMBER 1995 – REVISED FEBRUARY 1999
3–415
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D Member of the Texas Instruments
Widebus Family
D EPIC (Enhanced-Performance Implanted
CMOS) Submicron Process
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D Latch-Up Performance Exceeds 250 mA Per
JESD 17
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) and Thin Shrink
Small-Outline (DGG) Packages
description
This 18-bit bus transceiver is designed for 1.65-V
to 3.6-V V
CC
operation.
The SN74ALVCH16863 is an 18-bit noninverting
transceiver designed for synchronous
communication between data buses. The
control-function implementation minimizes
external timing requirements.
The SN74ALVCH16863 can be used as two 9-bit
transceivers or one 18-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 output-enable (OEAB
or OEBA)
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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH16863 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each 9-bit section)
INPUTS
OEAB OEBA
OPERATION
H L B data to A bus
L H A data to B bus
H H Isolation
Copyright 1999, Texas Instruments Incorporated
PRODUCTION DATA information is 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.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
DGG OR DL PACKAGE
(TOP VIEW)
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1OEAB
1B1
1B2
GND
1B3
1B4
V
CC
1B5
1B6
1B7
GND
1B8
1B9
GND
GND
2B1
2B2
GND
2B3
2B4
2B5
V
CC
2B6
2B7
GND
2B8
2B9
2OEAB
1OEBA
1A1
1A2
GND
1A3
1A4
V
CC
1A5
1A6
1A7
GND
1A8
1A9
GND
GND
2A1
2A2
GND
2A3
2A4
2A5
V
CC
2A6
2A7
GND
2A8
2A9
2OEBA