PI3B3244 Datasheet | Pericom Semiconductor

Features - - - - Near-Zero propagation delay 5-ohm switches connect inputs to outputs when enabled Fast Switching Speed - 4.5ns max. Ultra-Low Quiescent Power (0.2µA Typical) - Ideally suited for notebook applications - Pin patible with 74 series 244 logic devices - Packaging: - 20-pin 150-mil wide plastic QSOP (Q) - 20-pin 173-mil wide plastic TSSOP (L) Description Peri Semiconductor’s PI3B series of logic circuits are produced using the pany’s advanced sub-micron CMOS technology, achieving industry leading performance. The PI3B3244 features a set of 3.3V 8-bit bus switches, which is pinout and function patible with the P74FCT244T, 74F244, and 74ALS/AS/LS2448-bit drivers. Two enable signals (BEn) turn the switches on similar to the enable signals of the 244. The bus switch create no additional propagation delay or ground bounce noise. Block Diagram BE1 1A0 1A1 1A2 1A3 Pin Configuration BE1 1A0 2B3 1A1 2B2 1A2 2B1 1A3 2B0 GND 1B0 1B1 1B0 1B1 20 1 19 2 18 3 17 4 5 20-Pin 16 Q,L 15 6 14 7 13 8 12 9 11 10 Vcc BE2 1B0 2A3 1B1 2A2 1B2 2A1 1B3 2A0 BE2 2A0 2A1 2A2 2A3 2B0 2B1 2B2 2B3 Pin Description Pin Name BEn A0 - 7 B0- 7 GND VCC Description Bus Enable Input (Active LOW) Bus A Bus B Ground Power Truth Table(1) BE1 H L H L BE2 H H L L 1A, 1B Disconnect 1A = 1B Disconnect 1A = 1B 2A, 2B Disconnect Disconnect 2A = 2B 2A =...