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SN74LV244AMDWREP

IC BUFF 2V/5.5V 20-SOIC

Part Number: SN74LV244AMDWREP

Manufacturer: Texas Instruments

Category: Buffers, Drivers, Receivers, Transceivers

Package: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: SN74LV244AMDWREP.pdf

Description: IC BUFF 2V/5.5V 20-SOIC

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

SN74LV244AMDWREP Enhanced Product Octal Buffer/Driver with 3-State Outputs

A comprehensive technical overview of the SN74LV244AMDWREP, an Enhanced Product (EP) octal buffer and line driver from Texas Instruments featuring 2-V to 5.5-V VCC operation, 6.5 ns maximum propagation delay at 5 V, 3-state outputs, and extended temperature range of –55°C to 125°C. Covers device function, core features, electrical specifications, 20-lead SOIC package, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 20-SOIC 2V to 5.5V

Device Classification Octal Buffer/Driver with 3-State Outputs

Part Number: SN74LV244AMDWREP

Mounting Type: Surface Mount

Operating Temperature Range: -55°C to +125°C

PRODUCT OVERVIEW

What Is the SN74LV244AMDWREP?

SN74LV244AMDWREP is an Enhanced Product (EP) octal buffer and line driver from Texas Instruments, part of the SN74LV244A-EP family. The device is designed for 2-V to 5.5-V VCC operation and is specifically intended to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.[reference:0][reference:1]

The device is organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.[reference:2][reference:3] To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor.[reference:4]

The SN74LV244A-EP supports mixed-mode voltage operation on all ports and features Ioff circuitry that disables the outputs, preventing damaging current backflow through the devices when they are powered down.[reference:5][reference:6] The EP designation provides support for defense, aerospace, and medical applications with controlled baseline, extended product life cycle, extended product-change notification, product traceability, and qualification pedigree.[reference:7] The SN74LV244AMDWREP is offered in a 20-lead SOIC (DW) package and is rated for operation from –55°C to +125°C.[reference:8]

Octal Buffer/Driver Eight channels organized as two 4-bit line drivers with independent output-enable (OE) inputs.

Wide Voltage Operation 2-V to 5.5-V VCC operation with 6.5 ns max propagation delay at 5 V.

Enhanced Product (EP) Supports defense, aerospace, and medical applications with –55°C to 125°C temperature range and qualification pedigree.

DEVICE HIGHLIGHTS

Key Features and Benefits of SN74LV244AMDWREP

Octal Buffer/Driver with 3-State Outputs

Eight channels organized as two 4-bit line drivers with independent OE inputs, enabling flexible bus interface and memory address driving.

Wide Supply Voltage Range

Operates from 2 V to 5.5 V VCC, supporting 2.5-V, 3.3-V, and 5-V logic levels in mixed-voltage systems.

High-Speed Performance

Maximum propagation delay of 6.5 ns at 5 V ensures fast signal propagation for high-speed bus applications.[reference:9]

Enhanced Product (EP) Qualification

Supports defense, aerospace, and medical applications with controlled baseline, extended product life cycle, qualification pedigree, and –55°C to 125°C operation.[reference:10]

Robust ESD & Latch-Up Protection

ESD protection exceeds 2000-V HBM, 200-V MM, and 1000-V CDM per JESD 22. Latch-up performance exceeds 250 mA per JESD 17.[reference:11]

20-Lead SOIC Package

Available in a 20-lead SOIC (DW) package, ideal for space-constrained board designs requiring wide bus interfaces.

REFERENCE DATA

Technical Specifications for SN74LV244AMDWREP

Part Number	SN74LV244AMDWREP	Manufacturer	Texas Instruments
Device Type	Octal Buffer/Driver with 3-State Outputs	Number of Channels	8 (organized as two 4-bit banks)
Supply Voltage (VCC)	2 V to 5.5 V	Propagation Delay (Max)	6.5 ns at 5 V[reference:12]
Output Type	3-State	Input Type	LVTTL Compatible
Output Current (High, Low)	16 mA, 16 mA[reference:13]	Output Ground Bounce (VOLP)	<0.8 V at VCC = 3.3 V, TA = 25°C[reference:14]
Output VOH Undershoot (VOHV)	>2.3 V at VCC = 3.3 V, TA = 25°C[reference:15]	Latch-Up Performance	Exceeds 250 mA per JESD 17[reference:16]
ESD Protection (HBM)	2000 V per A114-A[reference:17]	ESD Protection (MM)	200 V per A115-A[reference:18]
ESD Protection (CDM)	1000 V per C101[reference:19]	Mixed-Mode Voltage Support	Yes[reference:20]
Ioff Partial-Power-Down Support	Yes[reference:21]	Package / Case	20-SOIC (DW)
Supplier Device Package	20-SOIC	Package Body Size	12.80mm × 10.30mm[reference:22]
Lead Pitch	1.27 mm	Mounting Type	Surface Mount
Operating Temperature (EP)	-55°C to +125°C[reference:23]	Moisture Sensitivity Level	Level-1-260C-UNLIM[reference:24]
RoHS	Green (RoHS & No Pb/Br)[reference:25]	Lead Finish / Ball Material	NiPdAu[reference:26]
Packaging	Tape & Reel (2,000 per Reel)[reference:27]	Reel Diameter	330 mm[reference:28]
Product Status	Active[reference:29]	US ECCN	EAR99[reference:30]
Device Marking	LV244AMEP[reference:31]	V62/06604-01XE	V62/06604-01XE[reference:32]

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use. Enhanced Product specifications apply over the temperature range of –55°C to 125°C.

DESIGN REFERENCE

Circuit Considerations for SN74LV244AMDWREP

Power Supply & Decoupling

The SN74LV244AMDWREP requires proper power supply design for optimal performance:

Supply Voltage: Operates with VCC from 2 V to 5.5 V
Decoupling: Place a ceramic capacitor (0.1 µF) close to the VCC pin to minimize supply noise
Mixed-Mode Operation: Supports mixed-mode voltage operation on all ports for compatibility with different logic families[reference:33]
Partial-Power-Down: Ioff circuitry disables outputs and prevents damaging current backflow when the device is powered down[reference:34][reference:35]

PCB and Signal Integrity Guidance

Buffer/Driver performance depends on layout and signal routing:

Output Enable Control: To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor. The minimum resistor value is determined by the current-sinking capability of the driver.[reference:36]
3-State Outputs: When OE is high, outputs are in the high-impedance state, allowing multiple outputs to be connected to a common bus[reference:37]
Ground Plane: Use a solid ground plane to minimize noise and ensure low-inductance return paths
Trace Routing: Keep bus traces short and maintain controlled impedance for high-speed operation
PCB Layout: Follow the recommended PCB footprint from the official datasheet prior to production

20-LEAD SOIC (12.80mm × 10.30mm)

Pin Configuration Reference for SN74LV244AMDWREP

LV244AMEP

SOIC TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The SOIC (DW) package has 20 pins with a 12.80mm × 10.30mm body size. Device marking for the SN74LV244AMDWREP is "LV244AMEP".[reference:38]

1 1OE Output Enable for Bank 1 (Active Low)

2 1A1 Data Input 1 for Bank 1

3 2Y4 Data Output 4 for Bank 2

4 1A2 Data Input 2 for Bank 1

5 2Y3 Data Output 3 for Bank 2

6 1A3 Data Input 3 for Bank 1

7 2Y2 Data Output 2 for Bank 2

8 1A4 Data Input 4 for Bank 1

9 2Y1 Data Output 1 for Bank 2

10 GND Ground

11 2OE Output Enable for Bank 2 (Active Low)

12 2A1 Data Input 1 for Bank 2

13 1Y4 Data Output 4 for Bank 1

14 2A2 Data Input 2 for Bank 2

15 1Y3 Data Output 3 for Bank 1

16 2A3 Data Input 3 for Bank 2

17 1Y2 Data Output 2 for Bank 1

18 2A4 Data Input 4 for Bank 2

19 1Y1 Data Output 1 for Bank 1

20 VCC Positive Power Supply (2 V to 5.5 V)

APPLICATION AREAS

Typical Applications for SN74LV244AMDWREP

3-State Memory Address Drivers

Designed specifically to improve the performance and density of 3-state memory address drivers for high-speed memory systems.[reference:39]

Clock Drivers

Buffers and distributes clock signals to multiple loads with low propagation delay and controlled impedance.[reference:40]

Bus-Oriented Receivers & Transmitters

Provides bidirectional bus interface with 3-state outputs for data communication between different subsystems.[reference:41]

Defense & Aerospace Systems

Enhanced Product (EP) qualification with controlled baseline and –55°C to 125°C temperature range supports military and aerospace applications.[reference:42]

Industrial Control & Automation

Wide supply voltage range and robust ESD protection suit industrial control and automation systems.

Medical Instrumentation

EP qualification and wide temperature range support medical diagnostic equipment requiring high reliability.

REPLACEMENT GUIDANCE

Selecting an Alternative for SN74LV244AMDWREP

A replacement for the SN74LV244AMDWREP should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Texas Instruments datasheet and product pages.

8 channels organized as two 4-bit banks

Supply voltage: 2 V to 5.5 V

Propagation delay: 6.5 ns max at 5 V

3-state outputs with independent OE controls

Package: 20-SOIC (DW)

Temperature range: –55°C to 125°C (EP)

Mixed-mode voltage operation, Ioff support

ESD: 2000-V HBM, 200-V MM, 1000-V CDM

Packaging alternatives (same package, different carrier):

Part Number	Package	Carrier	SPQ	Temperature Range
SN74LV244AMDWREP	20-SOIC (DW)	Tape & Reel	2,000[reference:43]	-55°C to 125°C
SN74LV244BMDWREP	20-SOIC (DW)	Tape & Reel	2,000[reference:44]	-55°C to 125°C

The SN74LV244AMDWREP is the Enhanced Product (EP) version of the octal buffer/driver in 20-SOIC (DW) package with tape-and-reel packaging (2,000 units per reel).[reference:45] The SN74LV244BMDWREP offers similar EP temperature grade and functionality with the same package and packaging. Select based on specific product revision and availability requirements.

Note: The SN74LV244AMDWREP is active; however, it may be nearing end-of-life. For new designs, please refer to the SN74LV244BMDWREP or contact TI for the latest recommendations.[reference:46]

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MANUFACTURER INFORMATION

Texas Instruments

The SN74LV244A-EP (SN74LV244AMDWREP) belongs to the SN74LV244A family of octal buffers and line drivers from Texas Instruments. The device is designed for 2-V to 5.5-V VCC operation and is specifically intended to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.[reference:47] The Enhanced Product (EP) designation provides support for defense, aerospace, and medical applications with controlled baseline, extended product life cycle, extended product-change notification, and product traceability.[reference:48] The SN74LV244A-EP is characterized for operation from –55°C to 125°C and is available in a 20-lead SOIC (DW) package.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: SN74LV244AMDWREP

Manufacturer: Texas Instruments

Package: 20-SOIC (0.295", 7.50mm Width)

Series: 74LV

Package/Case: 20-SOIC (0.295", 7.50mm Width)

Packaging: Tape & Reel (TR)

Product Status: Obsolete

Logic Type: Buffer, Non-Inverting

Number of Elements: 2

Number of Bits per Element: 4

Input Type: -

Output Type: 3-State

Current - Output High, Low: 16mA, 16mA

Voltage - Supply: 2V ~ 5.5V

Operating Temperature: -55°C ~ 125°C (TA)

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 20-SOIC

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SN74LV244AMDWREP is manufactured by Texas Instruments. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: SN74LV244AMDWREP

Manufacturer: Texas Instruments

Package: 20-SOIC (0.295", 7.50mm Width)

Category: Buffers, Drivers, Receivers, Transceivers

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