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SN74CB3Q3257DGVR датащи(PDF) 9 Page - Texas Instruments |
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SN74CB3Q3257DGVR датащи(HTML) 9 Page - Texas Instruments |
9 / 25 page 1B1 1A OE 1B2 SW SW 2B1 2A 2B2 SW SW 3B1 3A 3B2 SW SW 4B1 4A 4B2 SW SW S 4 7 9 12 1 15 2 3 5 6 11 10 14 13 SN74CB3Q3257 www.ti.com SCDS135B – SEPTEMBER 2003 – REVISED JUNE 2015 8.2 Functional Block Diagram 8.3 Feature Description The SN74CB3Q3257 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/output capacitance that minimizes loading and signal distortion (Cio(OFF) = 3.5 pF Typical). The SN74CB3Q3257 also provides a fast switching frequency (fOE = 20 MHz Max) 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 / 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 SN74CB3Q3257. Table 1. Function Table INPUTS INPUT/OUTPUT FUNCTION A OE S L L B1 A port = B1 port L H B2 A port = B2 port H X Z Disconnect Copyright © 2003–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: SN74CB3Q3257 |
Аналогичный номер детали - SN74CB3Q3257DGVR |
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Аналогичное описание - SN74CB3Q3257DGVR |
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