FST3125: 4-Bit Bus Switch

The ON Semiconductor FST3125 is a quad, high performance switch. The device is CMOS TTL compatible when operating between 4 and 5.5 Volts. The device exhibits extremely low RON and adds nearly zero propagation delay. The device adds no noise or ground bounce to the system. The device consists of four independent 1bit switches with separate Output Enable (OE) pins. Port A is connected to Port B when OE is low. If OE is high, the switch is high Z.

Features
  • Less Than 0.25 nsMax Delay Through Switch
  • Nearly Zero Standby Current
  • No Circuit Bounce
  • Control Inputs are TTL CMOS Compatible
  • PinForPin Compatible With QS3125, FST3125, CBT3125
  • All Popular Packages: TSSOP14, SOIC14
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
4-Bit Bus SwitchFST3125/D (118.0kB)0
4-Bit Bus Switch74FST3125/D (195.0kB)3
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC-14 NB751A-03 (34.3kB)L
TSSOP-14 WB948G-01 (39.6kB)C
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
FST3125DR2GActivePb-free Halide freeSOIC-14751A-031Tape and Reel2500$0.1733
FST3125DTR2GActivePb-free Halide freeTSSOP-14948G-011Tape and Reel2500$0.1733
Specifications
ProductChannelsOutputVCC Min (V)VCC Max (V)tpd Max (ns)IO Max (mA)
FST3125DR2G4CMOS45.50.25128
FST3125DTR2G4CMOS45.50.25128
4-Bit Bus Switch (118.0kB) FST3125
4-Bit Bus Switch FST3125
SOIC-14 NB NLSX5014
TSSOP-14 WB NLSX5014