SN74CBT3345 Datasheet, PDF (1/4 Pages) Texas Instruments – 8-BIT FET BUS SWITCH

SN74CBT3345
8-BIT FET BUS SWITCH
SCDS027D – MAY 1995 – REVISED MAY 1998
D Standard ’245-Type Pinout
D 5-Ω Switch Connection Between Two Ports
D TTL-Compatible Input Levels
D Package Options Include Plastic Shrink
Small-Outline (DB), Thin Very Small-Outline
(DGV), Small-Outline (DW), and Thin Shrink
Small-Outline (PW) Packages
description
The SN74CBT3345 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, DGV, DW, OR PW PACKAGE
(TOP VIEW)
OE 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 bank with dual output-enable (OE and OE) inputs. When OE is low
or OE is high, the switch is on and port A is connected to port B. When OE is high and OE is low, the switch is
open and a high-impedance state exists between the two ports.
The SN74CBT3345 is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
INPUT
OE
L
FUNCTION
A port = B port
H
Disconnect
logic diagram (positive logic)
2
A1
18
B1
9
A8
1
OE
19
OE
11
B8
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
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Copyright © 1998, Texas Instruments Incorporated
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