Fairchild FST162245 Data Handbook
Summary
The FST162245 is a high-speed 16-bit bus switch designed for robust connectivity between two parallel digital ports (A and B). Featuring integrated 25Ω series resistors, this device ensures reliable signal transfer in CMOS TTL environments while minimizing reflections and ground bounce noise. This manual provides critical technical documentation, including comprehensive electrical characteristics, operating condition tables, timing diagrams, and switching logic. It is an essential component for engineers developing complex digital interconnect systems that require low-latency, high-integrity bus switching solutions.
Page 1 Text Content
查询FST162245供应商
162245 16-B it B s S itch ith 25Ω eries R esisto rs in tp ts
April 2001 Revised April 2001
FST162245 16-Bit Bus Switch with 25Ω Series Resistors in Outputs General Description Features The Fairchild Switch FST162245 provides 16-bits of high- 25Ω 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 16-bit switch. There are two Control inputs compatible with TTL level
8-bit switches with separate output enable inputs. When OE is LOW, the switch is ON and Port a is connected to Port B. When OE is HIGH, the switch is OFF and a high impedance state exists between the A and B Ports. The FST162245 has an equivalent 25Ω series resistors to reduce signal-reflection noise, eliminating the need for external terminating resistors.
Ordering Code: Order Number Package Number Package Description FST162245MTD 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
Pin Descriptions Truth Table Pin Name Description Inputs Outputs
OEn Output Enable Input (Active LOW) OEx A, B 1An, 2An, 3An, 4An Bus A A Port = B Port 1Bn, 2Bn, 3Bn, 4Bn Bus B NC No Internal Connection H = HIGH Voltage Level L = LOW Voltage Level Z = High Impedance
© 2001 Fairchild Semiconductor Corporation DS500431 www.fairchildsemi.com
Page Summary Contents For Fairchild FST162245 Data Handbook
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 187.12 KB |
| Published | July 10, 2026 |
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Frequently Asked Questions
What electrical capability does the FST162245 provide?
It offers 16-bits of CMOS TTL-compatible bus switching, with two separate 8-bit switches.
How is signal reflection mitigated by this device?
The chip features equivalent 25Ω series resistors built-in, eliminating the need for external terminating resistors.
What must be done if I don't use all the control inputs?
Unused control inputs must be held HIGH or LOW and cannot float.
Does this device have safety restrictions regarding its use?
Fairchild products are not authorized for use as critical components in life support devices without express written approval.