SN74CBT3245 Datasheet, PDF (1/4 Pages) Texas Instruments – OCTAL BUS SWITCH

SN74CBT3245
OCTAL BUS SWITCH
SCDS002C – NOVEMBER 1992 – REVISED MAY 1995
D Functionally Equivalent to QS3245
D Standard ’245-Type Pinout
D 5-Ω Switch Connection Between Two Ports
D TTL-Compatible Control Input Levels
D Package Options Include Shrink
Small-Outline (DB), Plastic Small-Outline
(DW), and Thin Shrink Small-Outline (PW)
Packages
description
The SN74CBT3245 provides eight bits of
high-speed TTL-compatible bus switching in a
standard ’245 device pinout. The low on-state
resistance of the switch allows connections to be
made with minimal propagation delay.
DB, DW, OR PW PACKAGE
(TOP VIEW)
NC 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 ^V_CC
19 ^OE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
The device is organized as one 8-bit switch. When output enable (OE) is low, the switch is on and port A is
connected to port B. When OE is high, the switch is open and a high-impedance state exists between the two
ports.
The SN74CBT3245 is characterized for operation from – 40°C to 85°C.
FUNCTION TABLE
INPUT
OE
INPUTS/
OUTPUTS
A, B
L
A=B
H
Z
logic diagram
A1
B1
A8
B8
OE
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.
ADVANCE INFORMATION concerns new products in the sampling or
preproduction phase of development. Characteristic data and other
specifications are subject to change without notice.
Copyright © 1995, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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