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PI3B3244Q Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI3B3244Q Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
1 / 5 page 1 PS8149F 08/25/04 BE2 BE1 1B1 1B0 1A1 1A0 1B1 1B0 1A3 1A2 2B1 2B0 2A1 2A0 2B3 2B2 2A3 2A2 B A BE SW SW SW SW SW SW SW SW SW 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 BE1 1 A0 2 B3 1 A1 2 B2 1 A2 2 B1 1 A3 2 B0 GND Vcc BE2 1 B0 2 A3 1 B1 2 A2 1 B2 2 A1 1 B3 2 A0 Description Pericom Semiconductor’s PI3B series of logic circuits are produced using the Company’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 compatible 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. Truth Table(1) Note: 1. H = High Voltage Level, L = Low Voltage Level Block Diagram PinDescription PinName Description BEn Bus Enable Input (Active LOW) A0–7 Bus A B0–7 Bus B GND Ground VCC Power PinConfiguration PI3B3244 3.3V, Hot Insertion, 8-Bit, 2-Port NanoSwitch™ 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 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 compatible with 74 series 244 logic devices • Packaging: – 20-pin 150-mil wide plastic QSOP (Q) – 20-pin 173-mil wide plastic TSSOP (L) 20-Pin Q,L 1 E B2 E BB 1 , A 1B 2 , A 2 HH t c e n n o c s i Dt c e n n o c s i D LH B 1 = A 1t c e n n o c s i D HL t c e n n o c s i DB 2 = A 2 LL B 1 = A 1B 2 = A 2 |
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