FSTD16211 24-Bit Bus Switch with Level Shifting
June 2000
Revised August 2001
FSTD16211
24-Bit Bus Switch with Level Shifting
General Description
The Fairchild Switch FSTD16211 provides 24-bits of high-
speed CMOS TTL-compatible bus switching. The low on
resistance of the switch allows inputs to be connected to
outputs without adding propagation delay or generating
additional ground bounce noise. A diode to V
CC
has been
integrated into the circuit to allow for level shifting between
5V inputs and 3.3V outputs.
The device is organized as a 12-bit or 24-bit bus switch.
When OE
1
is LOW, the switch is ON and Port 1A is con-
nected to Port 1B. When OE
2
is LOW, Port 2A is connected
to Port 2B. When OE
1/2
is HIGH, a high impedance state
exists between the A and B Ports.
Features
s
4
鈩?/div>
switch connection between two ports
s
Voltage level shifting
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
Also packaged in plastic Fine-Pitch Ball Grid Array
(FBGA) (Preliminary)
Ordering Code:
Order Number
FSTD16211GX
(Note 1)
FSTD16211MTD
Package Number
BGA54A
(Preliminary)
MTD56
Package Description
54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
[TAPE and REEL]
56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter 鈥淴鈥?to the ordering code.
Note 1:
BGA package available in Tape and Reel only.
Logic Diagram
漏 2001 Fairchild Semiconductor Corporation
DS500313
www.fairchildsemi.com
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