1B

1C

1A

1

7

2

One of Two Switches

13

SN74LVC2G66

www.ti.com

SCES325N – JULY 2001 – REVISED AUGUST 2018

Product Folder Links: SN74LVC2G66

Submit Documentation Feedback

Copyright © 2001–2018, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

This dual bilateral analog switch is designed for 1.65-V to 5.5-V VCC operation. Robust LVC family technology

allows this device to accept input voltages without connecting power to VCC.

The SN74LVC2G66 device permits signals with amplitudes of up to 5.5 V (peak) to be transmitted in either

direction. A high-level voltage applied to the control pin C enables the respective switch to begin propagating

signals across the device. A low-level voltage disables this transmission. Each device incorporates two switches

with independent control and operation.

8.2 Functional Block Diagram

8.3 Feature Description

Each switch section has its own enable-input control (C). A high-level voltage applied to C turns on the

associated switch section. When C is this Signals can pass through A to B or B to A. Low ON-resistance of 6 Ω

at 4.5-V VCC is ideal for analog signal conditioning systems. The control signals can accept voltages up to 5.5 V

without VCC connected in the system. Combination of lower tpd of 0.8 ns at 3.3 V and low enable and disable time

make this part suitable for high-speed signal switching applications.

8.4 Device Functional Modes

Table 1 lists the functional modes of the SN74LVC2G66.

Table 1. Function Table

CONTROL

INPUT

(C)

SWITCH

L

Off

H

On