FST32X245 Datasheet, PDF (1/4 Pages) Fairchild Semiconductor – 16-Bit Bus Switch

June 2002
Revised October 2002
FST32X245
16-Bit Bus Switch
General Description
The Fairchild Switch FST32X245 provides 16-bits of high
speed CMOS TTL-compatible bus switching in a standard
flow-through mode. 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 a 16-bit switch. When 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-imped-
ance state exists between the two ports.
Features
s 4Ω switch connection between two ports
s Minimal propagation delay through the switch
s Low l_CC
s Zero bounce in flow-through mode
s Control inputs compatible with TTL level
s 16-bit version of FST3245
Ordering Code:
Order Number
Package
Number
Package Description
FST32X245QSP MQA40A 40-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Diagram
Connection Diagram
Pin Descriptions
Pin Name
OE_n
A_n
B_n
NC
Description
Bus Switch Enable
Bus A
Bus B
No Connect
Function Table
Input OE_n
L
H
Function
Connect
Disconnect
© 2002 Fairchild Semiconductor Corporation DS500620
www.fairchildsemi.com