A

B

Control

Circuit

2) EN is the internal enable signal applied to the switch.

SN74CB3T3245

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SCDS136B – OCTOBER 2003 – REVISED JUNE 2015

Functional Block Diagram (continued)

Figure 7. Simplified Schematic, Each FET Switch (SW)

8.3 Feature Description

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

tolerant inputs.

This part is friendly to partial power down systems. The I/Os are 5-V-tolerant with the device powered up or

The SN74CB3T3245 has a bidirectional data flow with near-zero propagation delay.

Data and control inputs provide undershoot clamp diodes.

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

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