1A

1Y

1

6

2A

2Y

3

4

8

SN74LVC2G07

SCES308L – AUGUST 2001 – REVISED MAY 2015

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Copyright © 2001–2015, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

The SN74LVC2G07 device contains two open drain buffer with a maximum sink current of 32 mA. This device is

fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing

damaging current backflow through the device when it is powered down.

8.2 Functional Block Diagram

8.3 Feature Description

The open-drain configuration means that the device cannot provide its own output drive current; instead, it relies

on pullup resistors to provide the "high" bus state. It can only drive the bus low. In the "Hi-Z" state, the

SN74LVC2G07 acts as an open circuit and allows the external pullup to pull the bus high. Therefore, the pullup

voltage determines the output level and therefore the SN74LVC2g07 can be used for up or down-translation. The

device can sink 24 mA at 3 V while retaining an output voltage (VOL) of 0.55 V or lower.

8.4 Device Functional Modes

Table 1 shows the device functional modes of the SN74LVC2G07 device.

Table 1. Function Table

INPUT

A

OUTPUT

Y

L

L

H

H