Texas Instruments SN74HC240PWR

Mfr. Part

SN74HC240PWR

Manufacturer

Luminary Micro Texas Instruments. Y-IC is a quality distributor for this brand and we will provide the best products and services

Detailed Description

Octal inverting buffer line driver with 3-state outputs. Implemented as two independent 4-bit sections with separate enables. Wide supply range 2 to 6 V. Surface-mount 20-TSSOP package. Industrial temperature grade minus 40 to plus 85 degrees C. RoHS3 compliant. Ideal for bus isolation and signal buffering in 3 V and 5 V systems

Key Features

8-channel inverting buffer with 3-state outputs

Two 4-bit sections with separate active-low enables for flexible control

Operates from 2 to 6 V supply

High drive capability about plus or minus 7.8 mA per output at higher VCC

Low power CMOS 74HC family

Good noise margins and clean switching for general logic interfacing

Compatible with standard 74HC logic levels

Tape and Reel packaging for automated SMT

Key Advantages

Simple way to invert and buffer shared buses while reducing loading on controllers and memory

3-state outputs simplify bus sharing and isolation

Wide supply range fits both 3.3 V and 5 V designs

Compact TSSOP-20 saves board space and reduces weight

Low static power with strong output drive for higher fan-out

Separate enables allow partial section control and easy gating

Packaging

Type Tape and Reel for automated placement

Package 20-TSSOP TI package code PW PWR

Material Molded epoxy body with matte tin leads lead-free and RoHS3 compliant

Size body width 4.40 mm body length about 6.5 mm height about 1.2 mm lead pitch 0.65 mm

Pin configuration 20 pins total 8 inputs A1 to A8 8 inverting 3-state outputs Y1 to Y8 two active-low enable pins one per 4-bit section plus VCC and GND

Thermal characteristics typical junction-to-ambient thermal resistance around 100 to 130 degrees C per watt on standard FR-4 boards actual values depend on layout and copper area refer to the datasheet for exact metrics

Electrical properties supply 2 to 6 V output drive about plus or minus 7.8 mA 3-state high impedance when disabled propagation delay typically single-digit to low-teens nanoseconds depending on VCC and load input leakage in microamps operating temperature minus 40 to plus 85 degrees C

Lifecycle

Status Active and widely available not nearing discontinuation

TI automotive grade option SN74HC240QPWRQ1 for AEC-Q100 applications

Equivalent or alternative models with similar function and pinouts

- Texas Instruments SN74HC240PW TSSOP-20 tube

- Texas Instruments SN74HC240D SOIC-20

- Texas Instruments SN74HC240N PDIP-20

- Texas Instruments SN74HCT240PWR TSSOP-20 HCT family TTL-level inputs

- Nexperia 74HC240PW TSSOP-20 and 74HC240D SOIC-20

- ON Semiconductor MC74HC240ADR2G SOIC-20

- STMicroelectronics M74HC240RM13TR TSSOP-20 and M74HC240D SO-20

- Toshiba TC74HC240AF TSSOP-20 and TC74HC240AP DIP-20

- Diodes Incorporated 74HC240 available in common SO-20 and TSSOP-20 variants

If you need other cross-brand pin-compatible or function-compatible parts please contact our sales team on the Y-IC website for more options and detailed guidance

Key Application Areas

Microcontroller and processor bus buffering and inversion

Shared bus isolation and enable-controlled gating for address or data lines

Memory and FPGA interface buffering

Level interfacing within 2 to 6 V systems

LED row or column driving where inversion is useful

Board-to-board signal driving and backplane buffering

General-purpose digital logic expansion and signal conditioning

Datasheet

Y-IC provides the most authoritative datasheet for this product model on our website. Visit this product page and download the datasheet now for complete specifications timing diagrams pinouts and layout guidance

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