FST3384 10-Bit Low Power Bus Switch
September 1997
Revised December 1999
FST3384
10-Bit Low Power Bus Switch
General Description
The Fairchild Switch FST3384 provides 10 bits of high-
speed CMOS TTL-compatible bus switches. The low on
resistance of the switch allows inputs to be connected to
outputs without adding propagation delay or generating
additional ground bounce noise. The device is organized
as two 5-bit switches with separate bus enable (OE) sig-
nals. When OE is LOW, the switch is ON and Port A is con-
nected to Port B. When OE is HIGH, the switch is OPEN
and a high-impedance state exists between the two ports.
Features
s
4鈩?switch connection between two ports
s
Minimal propagation delay through the switch
s
Ultra low power with
<
0.1
碌A
typical I
CC
s
Zero ground bounce in flow-through mode
s
Control inputs compatible with TTL level
Ordering Code:
Order Number
FST3384WM
FST3384QSC
FST3384MTC
Package Number
M24B
MQA24
MTC24
Package Description
24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Logic Diagram
Connection Diagram
Pin Descriptions
Pin Names
OEA, OEB
A
0
鈥揂
9
B
0
鈥揃
9
Description
Bus Switch Enable
Bus A
Bus B
Truth Table
OEA OEB
L
L
H
H
L
H
L
H
B
0
鈥揃
4
A
0
鈥揂
4
A
0
鈥揂
4
B
5
鈥揃
9
A
5
鈥揂
9
HIGH-Z State
Function
Connect
Connect
Connect
Disconnect
HIGH-Z State A
5
鈥揂
9
HIGH-Z State HIGH-Z State
漏 1999 Fairchild Semiconductor Corporation
DS500046
www.fairchildsemi.com
Print form created on December 13, 1999 4:03
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