ic datasheet pdf-74ac11245,pdf(octal bus transceiver).pdf

74AC11245
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCAS010B – JULY 1987 – REVISED APRIL 1996
D 3-State Outputs Drive Bus Lines Directly DB, DW, NT, OR PW PACKAGE
(TOP VIEW)
D Flow-Through Architecture Optimizes
PCB Layout A1 1 24 DIR
D Center-Pin VCC and GND Configurations A2 2 23 B1
Minimize High-Speed Switching Noise A3 3 22 B2
D EPICt (Enhanced-Performance Implanted A4 4 21 B3
CMOS) 1-m m Process GND 5 20 B4
D 500-mA Typical Latch-Up Immunity at GND 6 19 VCC
125°C GND 7 18 VCC
8 17
D Package Options Include Plastic GND B5
9 16
Small-Outline (DW), Shrink Small-Outline A5 B6
10 15
(DB), and Thin Shrink Small-Outline (PW) A6 B7
11 14
Packages, and Standard Plastic 300-mil A7 B8
12 13
DIPs (NT) A8 OE

description
This octal bus transceiver is designed for asynchronous two-munication between data buses. The
control-function implementation minimizes external timing requirements.
The device allows noninverted 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.
The 74AC11245 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
OUTPUT DIRECTION
ENABLE CONTROL OPERATION
OE DIR
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 is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date. Copyright  1996, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.