74FST3244

www.DataSheet4U.com 74FST3244 8−Bit Bus Switch The ON Semiconductor 74FST3244 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 two 4 −bit 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 http://onsemi.com MARKING DIAGRAMS 20 1 SOIC−20 DW SUFFIX CASE 751D 1 20 1 TSSOP−20 DT SUFFIX CASE 948E 20 FST 3244 ALYW 1 FST3244 AWLYYWW 20 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 QS3244, FST3244, CBT3244 All Popular Packages: QSOP−20, TSSOP−20, SOIC−20 All Devices in Package TSSOP are Inherently Pb−Free* OE1 1A0 2B3 1A1 2B2 1A2 2B1 1A3 2B0 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC OE2 1B0 2A3 1B1 2A2 1B2 2A1 1B3 2A0 20 1 QSOP−20 QS SUFFIX CASE 492A A L, WL Y W, WW = = = = 20 FST3244 AWLYWW 1 Figure 1. 20−Lead Pinout Assembly Location Wafer Lot Year Work Week PIN NAMES TRUTH TABLE Inputs OE1 L L H H OE2 L H L H Inputs/Outputs 1A, 1B 1A = 1B 1A = 1B Z Z 2A, 2B 2A = 2B Z 2A = 2B Z OE1, OE2 1A, 2A 1B, 2B Pin Description Bus Switch Enables Bus A Bus B ORDERING INFORMATION See detailed ordering and shipping inf...