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SN74CB3T3245PWE4 Datasheet(PDF) 9 Page - Texas Instruments |
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SN74CB3T3245PWE4 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 28 page A EN(2) B Control Circuit VG(1) 1) Gate Voltage (VG) is approximately equal to VCC + VT when the switch is ON and VI > (VCC + VT). 2) EN is the internal enable signal applied to the switch. SN74CB3T3245 www.ti.com SCDS136B – OCTOBER 2003 – REVISED JUNE 2015 Functional Block Diagram (continued) Figure 7. Simplified Schematic, Each FET Switch (SW) 8.3 Feature Description The SN74CB3T3245 device uses the standard '245-type pinout. The output voltage tracks VCC, allowing for easy down-translation. The device is ideal for low-power portable equipment. Mixed-mode signal operation is supported on all data I/O ports. 5-V input down to 3.3-V output level shift with 3.3-V VCC and 5-V/3.3-V input down to 2.5-V output level shift With 2.5-V VCC are possible due to overvoltage tolerant inputs. This part is friendly to partial power down systems. The I/Os are 5-V-tolerant with the device powered up or powered down and Ioff supports partial-power-down mode operation The SN74CB3T3245 has a bidirectional data flow with near-zero propagation delay. The SN74CB3T3245 has low ON-state resistance (ron) characteristics (ron = 5 Ω Typical) The SN74CB3T3245 has both low input and output capacitance minimizes loading (Cio(OFF) = 5 pF Typical) Data and control inputs provide undershoot clamp diodes. The SN74CB3T3245 has low power consumption (ICC = 40 μA Maximum) The SN74CB3T3245 has a VCC operating range from 2.3 V to 3.6 V. The data I/Os support 0- to 5-V signaling levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V) Control inputs can be driven by TTL or 5-V/3.3-V CMOS outputs 8.4 Device Functional Modes Table 1 lists the functional modes of the SN74CB3T3245. Table 1. Function Table INPUT INPUT/OUTPUT FUNCTION OE A L B A port = B port H Z Disconnect Copyright © 2003–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: SN74CB3T3245 |
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