Product Folder - FST3257 - Quad 2:1 Multiplexer/Demultiplexer Bus Switch

FST3257
Quad 2:1 Multiplexer/Demultiplexer Bus Switch

General Description

The Fairchild Switch FST3257 is a quad 2:1 high-speed CMOS TTL-compatible multiplexer/demultiplexer bus switch. The low on resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise.

When OE# is LOW, the select pin connects the A Port to the selected B Port output. When OE# is HIGH, the switch is OPEN and a high-impedance state exists between the two ports.

Features

4ohm 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.

Product Status/Pricing/Packaging

Product	Product status	Eco Status	Pricing*	Package type	Leads	Packing method	Package Marking Convention**
FST3257M	Full Production	RoHS Compliant	$0.186	SOIC	16	RAIL	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FST3257
FST3257MTC	Full Production	RoHS Compliant	$0.186	TSSOP	16	RAIL	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FST3257
FST3257MTCX	Full Production	RoHS Compliant	$0.186	TSSOP	16	TAPE REEL	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FST3257
FST3257MX	Full Production	RoHS Compliant	$0.186	SOIC	16	TAPE REEL	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FST3257
FST3257QSC	Full Production	RoHS Compliant	$0.286	QSOP	16	RAIL	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FST3257
FST3257QSCX	Full Production	RoHS Compliant	$0.286	QSOP	16	TAPE REEL	Line 1: $Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FST3257

* Fairchild 1,000 piece Budgetary Pricing

** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples

Package marking information for product FST3257 is available. Click here for more information .

Models

Package & leads	Condition	Temperature range	Vcc range	Software version	Revision date
IBIS
TSSOP-16	All	-40°C to 85°C	4.5V to 5.5V	3.2	Nov 1, 1999

Application Notes

AN-5007: An Introduction to Fairchild Switch Products (47 K) Sep 05, 2008
MS-549: Fairchild Switch Product Feature Matrix (14 K) Sep 05, 2008

Qualification Support

Click on a product for detailed qualification data

Product
FST3257M
FST3257MTC
FST3257MTCX
FST3257MX
FST3257QSC
FST3257QSCX