Fairchild Semiconductor FST16213MTDX, FST16213MTD, FST16213MEAX, FST16213MEA, FST16213CW Datasheet
© 1999 Fairchild Semiconductor Corporation DS500039 www.fairchildsemi.com
July 1997
Revised December 1999
FST16213 24-Bit Bus Exchange Switch
FST16213
24-Bit Bus Exchange Switch
General Description
The Fairchild Switc h FST16213 provides 24-bits of highspeed CMOS TTL-compatible bus switching or exchanging. The low on resistance of the swi tch allows inputs to be
connected to outputs without add ing propagation delay or
generating additional ground bounce noise.
The device operate s as a 24-bi t bu s switc h or a 12- bit bus
exchanger, which allows data exchang e between the four
signal ports via the data-select terminals.
Features
■ 4Ω switch connection between two ports.
■ Minimal propagation delay through the switch.
■ Low l
CC
.
■ Zero bounce in flow-through mode.
■ Control inputs compatible with TTL level.
Ordering Code:
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering code.
Logic Diagram
Order Number Package Number Package Description
FST16213MEA MS56A 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide
FST16213MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
www.fairchildsemi.com 2
FST16213
Connection Diagram Pin Descriptions
Tr uth Table
Pin Name Description
S2, S1, S0 Data-select inputs
A
1
, A
2
Bus A
B
1
, B
2
Bus B
S2 S1 S0 A
1
A
2
Function
L L L Z Z Disconnect
LLH B
1
ZA
1
= B
1
LHL B
2
ZA
1
= B
2
LHH Z B
1
A2 = B
1
HLL Z B
2
A2 = B
2
HLHA2 and B2A1 and B2A1 = A2 = B
2
HHL B
1
B2A1 = B1, A2 = B
2
HHH B
2
B1A1 = B2, A2 = B
1
Loading...