TI SN74LS640NE4

Manufacturer No:

SN74LS640NE4

Manufacturer:

Package:

PDIP

Description:

DUAL Buffers 20 Pins PDIP

Quantity:

In Stock :9461

Looking for price or availability? Send us an RFQ and our sales team will respond quickly.

Shipping & Availability

Fast worldwide shipping via DHL, FedEx, UPS, and EMS.

Shipped from：HK Warehouse

Expected Shipping：Thu, May 7 - Fri, May 8, 2026

Lead Time：Inquire about availability

Date Code：Within 2 Years

Payment

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Authenticity Guarantee

All components supplied by Aichiplink are sourced from trusted global suppliers and verified through strict in-house inspection and quality control procedures.

Quality Assurance

Certified in-house inspection and testing facilities ensure all components meet internationally recognized quality standards.

User Guide

Aichiplink operates certified in-house inspection and testing facilities to ensure all electronic components meet internationally recognized quality and compliance standards. Our quality management system is verified through ISO 9001 certification and industry-standard inspection procedures.

PURCHASE

Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.

MEANS OF PAYMENT

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and Wire Transfer. Net terms may be available for qualified customers upon approval.

RFQ (REQUEST FOR QUOTATIONS)

Please ensure the part numbers and quantities are accurate and complete when submitting your RFQ.
Provide target prices and acceptable alternatives, if any, to speed up the quotation process.

IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

Step1：Prepare product

Step2：Desiccant Protection

Step3：Vacuum Packaging

Step4：Individual Package

Step5：Anti-collision Filling

Step6：Packaging Box

SHIPPING COST

1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.

SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.

SN74LS640NE4 Information

TI SN74LS640NE4 technical specifications, attributes, parameters and parts with similar specifications to TI SN74LS640NE4.

Type
Parameter

Mount
Through Hole

Package / Case
PDIP

Number of Pins
20

Weight
1.1991g

JESD-609 Code
e4

Pbfree Code
yes

Number of Terminations
20

ECCN Code
EAR99

Terminal Finish
Nickel/Palladium/Gold (Ni/Pd/Au)

Max Operating Temperature
70°C

Type
Parameter

Min Operating Temperature
0°C

Additional Feature
WITH DIRECTION CONTROL

Subcategory
Bus Driver/Transceivers

Technology
TTL

Terminal Position
DUAL

Peak Reflow Temperature (Cel)
NOT SPECIFIED

Number of Functions
1

Supply Voltage
5V

Terminal Pitch
2.54mm

Time@Peak Reflow Temperature-Max (s)
NOT SPECIFIED

Download datasheets and manufacturer documentation for TI SN74LS640NE4.

SN74LS640NE4 Overview

This package uses PDIP. It is necessary to use all 1 elements. Thebuffer features 20 terminations that serve different purposes. 5V is the required supply voltageThis buffer driver is part of the LS family of parts. With the electrical component, 20 pins are set. This logical driver is suitable for Through Hole different applications. In total, it has 20 pins. The transceiver features 2 ports for enhanced functionality. Bus Driver/Transceiverss are specifically types of them. The recommended power supply is 5V. Users are advised to apply 5V supply voltage to the electronic part for the part to operate safely and reliably. This electronic part includes 8 efficient bits that can be used to increase efficiency. With WITH DIRECTION CONTROL, you can better serve your customers. A temperature as low as 0°C can be tolerated by this buffer. There should be no more than 70°C ambient temperature for the logical driver to operate. As a low-level output mode, it produces 24mA. During high-level output, the electronic part may conduct 24mA. At least 4.75V should be used in order to run this automotive buffer on a continuous basis. Approximately 5.25V are the maximum supply voltages. There is an bus transceiver called a BUS TRANSCEIVER logic chip. Bus transceiver works on the basis of 8 circuits. Buffer ICs are controlled by COMMON CONTROL control technology during startup.