FSTU16862_06 Datasheet, PDF (1/7 Pages) Fairchild Semiconductor – 20-Bit Bus Switch with -2V Undershoot Protection

May 2002
Revised October 2006
FSTU16862
20-Bit Bus Switch with 2V Undershoot Protection
General Description
The Fairchild Switch FSTU16862 provides 20-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.
The device is organized as a 20-bit bus switch. When OE_X
is LOW, the switch is ON and Port A is connected to Port B.
When OE_X is HIGH, a high impedance state exists
between the A and B Ports. The A and B Ports are pro-
tected against undershoot to support an extended range to
2.0V below ground. Fairchild's integrated Undershoot
Hardened Circuit (UHC®¥) senses undershoot at the I/O
and responds by preventing voltage differentials from
developing and turning the switch on.
Features
s Undershoot hardened to 2V (A and B Ports)
s 4: 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 See Application Note AN-5008 for details on
FSTU - Undershoot Protected Fairchild Switch Family
Ordering Code:
Order Number
Package
Number
Package Description
FSTU16862QSP MQA48A 48-Lead Quarter Size Very Small Outline Package (QVSOP), JEDEC MO-154, 0.150" Wide
FSTU16862MTD MTD48 48-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 “X” to the ordering code.
UHC®¥ is a registered trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation DS500703
www.fairchildsemi.com