6 k

Ω

Input A

Output Y

GND

VCC

3.4 k

Ω

1.6 k

Ω

100

Ω

1 k

Ω

Copyright © 2016, Texas Instruments Incorporated

8

SN5407, SN5417, SN7407, SN7417

SDLS032H – DECEMBER 1983 – REVISED SEPTEMBER 2016

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Product Folder Links: SN5407 SN5417 SN7407 SN7417

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Copyright © 1983–2016, Texas Instruments Incorporated

8 Detailed Description

8.1 Overview

The SN74x7 is a high sink current capable open-collector buffer. This device is high-voltage tolerant on the

output of up to 30 V on the SNx407 model and 15 V on the SNx417 model. The SN74x7 is also useful for

converting TTL voltage levels to MOS levels.

8.2 Functional Block Diagram

Resister values shown are nominal.

Figure 3. Schematic

8.3 Feature Description

The SNx407 and SNx417 devices are ideal for high voltage outputs. The SNx407 device has a maximum output

voltage 30 V and the SNx417 device has a maximum output voltage 15 V.

The high sink current is up to 40 mA for the SN74x7.

8.4 Device Functional Modes

Table 1 lists the functions of the devices.

Table 1. Function Table

INPUT

A

OUTPUT

Y

H

High-Z

L

L