Fairchild FST16861 Data Handbook
Summary
This comprehensive resource details the FST16861, a high-speed 20-Bit CMOS TTL-compatible bus switch designed for reliable data signal interconnection between two ports. The manual provides engineers with essential specifications, including detailed electrical characteristics (DC/AC), timing parameters, logic diagrams, and physical dimensions. It is ideal for electronic designers requiring minimal propagation delay and low ON resistance in complex digital circuit implementations.
Page 1 Text Content
查询FST16861供应商
16861 20-B it B s S itch
March 2000 Revised March 2000
FST16861 20-Bit Bus Switch General Description Features The Fairchild Switch FST16861 provides 20-Bits of high- 4Ω switch connection between two ports. speed CMOS TTL-compatible bus switching. The low ON
Minimal propagation delay through the switch.
resistance of the switch allows inputs to be connected to
Low l CC.
outputs without adding propagation delay or generating
additional ground bounce noise. Zero bounce in flow-through mode. The device is organized as a 10-bit or 20-Bit bus switch. Control inputs compatible with TTL level.
When OE1 is LOW, the switch is ON and Port 1A is con- nected to Port 1B. When OE2 is LOW, Port 2A is connected to Port 2B. When OEX is HIGH, a high impedance state exists between the A and B Ports.
Ordering Code: Order Number Package Number Package Description FST16861MTD 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.
Connection Diagram Logic Diagram
Truth Table
Pin Descriptions Inputs Inputs/Outputs
Pin Name Description OE1 OE2 1A, 1B 2A, 2B
OE1, OE2 Bus Switch Enables 1A = 1B 2A = 2B 1A, 2A Bus A 1A = 1B
1B, 2B Bus B 2A = 2B
© 2000 Fairchild Semiconductor Corporation DS500318 www.fairchildsemi.com
Page Summary Contents For Fairchild FST16861 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 86.72 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
How does the switch activate or deactivate?
The switch is ON when OE is LOW, connecting A to B ports; it enters a high impedance state (X) when OE is HIGH.
What are the recommended operating voltage limits for VCC?
While the absolute max rating is 0.5V to +7.0V, the recommended operating voltage (Vcc) range is 4.0V to 5.5V.
What signal capability does this switch support?
It supports CMOS TTL-compatible bus switching and maintains minimal propagation delay.
Is the device suitable for life support applications?
No; its use as a critical component in life support devices requires express written approval from Fairchild Semiconductor Corporation.