74FST3345

www.DataSheet4U.com 74FST3345 8−Bit Bus Switch The ON Semiconductor 74FST3345 is an 8−bit, 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 an 8−bit switch with two Output/Enable pins (OE and OE). Features 20 20 1 SOIC−20 DW SUFFIX CASE 751D FST3345 AWLYYWW 1 http://onsemi.com MARKING DIAGRAMS RON t 4 W Typical Less Than 0.25 ns−Max Delay Through Switch Nearly Zero Standby Current No Circuit Bounce Control Inputs are TTL/CMOS Compatible Pin−For−Pin Compatible with QS3345, FST3345, CBT3345 All Popular Packages: QSOP−20, TSSOP−20, SOIC−20 All Devices in Package TSSOP are Inherently Pb−Free* OE A0 A1 A2 A3 A4 A5 A6 A7 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC OE B0 B1 B2 B3 B4 B5 B6 B7 20 1 TSSOP−20 DT SUFFIX CASE 948E 20 FST 3345 ALYW 1 20 20 1 QSOP−20 QS SUFFIX CASE 492A B0 FST3345 AWLYWW 1 Figure 1. 20−Lead Pinout A0 2 18 A7 OE OE 9 11 A L, WL Y W, WW = = = = Assembly Location Wafer Lot Year Work Week B7 1 19 PIN NAMES Pin OE1, OE2 1A, 2A 1B, 2B Function Description Bus Switch Enables Bus A Bus B Figure 2. Logic Diagram TRUTH TABLE Inputs OE X H L OE L X H Connect Connect Disconnect ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 3 of this data sheet. *For a...