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SN74CB3Q3253RGYR Folha de dados(PDF) 9 Page - Texas Instruments |
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SN74CB3Q3253RGYR Folha de dados(HTML) 9 Page - Texas Instruments |
9 / 25 page 2B1 1B1 2A 1A S0 S1 1OE 2OE 1B2 1B3 1B4 2B2 2B3 2B4 SW SW SW SW SW SW SW SW 7 9 14 2 1 15 6 5 4 3 10 11 12 13 SN74CB3Q3253 www.ti.com SCDS145B – OCTOBER 2003 – REVISED JUNE 2015 8.2 Functional Block Diagram 8.3 Feature Description The SN74CB3Q3253 device has a high-bandwidth data path (up to 500 MHz) and has 5-V tolerant I/Os with the device powered up or powered down. It also has low and flat ON-state resistance (ron) characteristics over operating range (ron = 4 Ω Typical) This device also has rail-to-rail switching on data I/O ports for 0- to 5-V switching with 3.3-V VCCand 0- to 3.3-V switching with 2.5-V VCCas well as bidirectional data flow with near-zero propagation delay and low input and output capacitance that minimizes loading and signal distortion (Cio(OFF) = 3.5 pF Typical) The SN74CB3Q3253 also provides a fast switching frequency (fOE = 20 MHz Maximum) with data and control inputs that provide undershoot clamp diodes as well as low power consumption (ICC = 0.6 mA Typical) The VCC operating range is from 2.3 V to 3.6 V and the data I/Os support 0- to 5-V signal levels of (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V) The control inputs can be driven by TTL or 5-V and 3.3-V CMOS outputs as well as Ioff Supports Partial-Power- Down Mode Operation 8.4 Device Functional Modes Table 1 lists the functional modes of the SN74CB3Q3253. Table 1. Function Table (Each Multiplexer/Demultiplexer) INPUTS INPUT/OUTPUT FUNCTION OE S1 S0 A L L L B1 A port = B1 port L L H B2 A port = B2 port L H L B3 A port = B3 port L H H B4 A port = B4 port H X X Z Disconnect Copyright © 2003–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: SN74CB3Q3253 |
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