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SN74LVC8T245MPWREP

IC TRANSLATION TXRX 1.65V

Part Number: SN74LVC8T245MPWREP

Manufacturer: Texas Instruments

Category: Buffers, Drivers, Receivers, Transceivers

Package: 24-TSSOP (0.173", 4.40mm Width)

Datasheet:: SN74LVC8T245MPWREP.pdf

Description: IC TRANSLATION TXRX 1.65V

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

SN74LVC8T245MPWREP Enhanced Product 8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and Tri-State Outputs

A comprehensive technical overview of the SN74LVC8T245MPWREP, an Enhanced Product 8-bit non-inverting dual-supply bus transceiver from Texas Instruments featuring configurable dual-rail design with each port operating over the full 1.65V to 5.5V power-supply range, 500Mbps maximum data rate, 8.2ns propagation delay, VCC isolation, Ioff partial-power-down support, and a 24-pin TSSOP package rated for operation from –55°C to +125°C. Covers device function, core features, electrical specifications, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 24-TSSOP (4.40mm × 7.80mm) 1.65V to 5.5V

Device Classification 8-Bit Dual-Supply Bus Transceiver

Part Number: SN74LVC8T245MPWREP

Mounting Type: Surface Mount

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

PRODUCT OVERVIEW

What Is the SN74LVC8T245MPWREP?

SN74LVC8T245MPWREP is an Enhanced Product 8-bit non-inverting dual-supply bus transceiver from Texas Instruments that uses two separate configurable power-supply rails. The A port is designed to track V_CCA, which accepts any supply voltage from 1.65V to 5.5V. The B port is designed to track V_CCB, which also accepts any supply voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.8V, 2.5V, 3.3V, and 5.5V voltage nodes.

The SN74LVC8T245MPWREP is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess I_CC and I_CCZ.

The device is designed so that the control pins (DIR and OE) are supplied by V_CCA. It is fully specified for partial-power-down applications using I_off, which disables the outputs to prevent damaging current backflow through the device when it is powered down. The V_CC isolation feature ensures that if either V_CC input is at GND, all outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup resistor.

The SN74LVC8T245MPWREP is an Enhanced Product grade device featuring a controlled baseline, one assembly/test site, one fabrication site, extended product life cycle, extended product-change notification, and product traceability. It is available in a 24-pin TSSOP package with a 4.40mm × 7.80mm body size, rated for operation from –55°C to +125°C. The device is RoHS compliant, REACH unaffected, and in active production.

Fully Configurable Dual-Rail Design Each port operates over the full 1.65V to 5.5V power-supply range, enabling universal low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5.5V nodes.

V_CC Isolation & I_off Support If either V_CC input is at GND, all outputs are in the high-impedance state. I_off circuitry disables outputs during partial-power-down, preventing damaging current backflow.

Enhanced Product Grade Controlled baseline, one assembly/test site, one fabrication site, extended product life cycle, extended product-change notification, and product traceability with –55°C to +125°C operation.

DEVICE HIGHLIGHTS

Key Features and Benefits of SN74LVC8T245MPWREP

Fully Configurable Dual-Rail Design

Each port operates over the full 1.65V to 5.5V power-supply range, allowing universal low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5.5V voltage nodes.

V_CC Isolation Feature

If either V_CC input is at GND, all outputs are in the high-impedance state. This feature protects the device and system during power sequencing and partial power-down conditions.

I_off Partial-Power-Down Support

The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. This enables reliable operation in mixed-voltage systems with independent power domains.

High-Speed Data Rate (500 Mbps)

Supports data rates up to 500 Mbps with a typical propagation delay of 8.2ns, enabling high-speed signal transmission in advanced digital systems.

Robust ESD and Latch-Up Protection

ESD protection exceeds JESD 22 (4000V HBM, 200V MM, 1000V CDM), and latch-up performance exceeds 100mA per JESD 78, Class II, ensuring reliable operation in harsh environments.

Enhanced Product (EP) Grade

Controlled baseline, one assembly/test site, one fabrication site, extended product life cycle, extended product-change notification, and product traceability for defense, aerospace, and medical applications.

REFERENCE DATA

Technical Specifications for SN74LVC8T245MPWREP

Part Number	SN74LVC8T245MPWREP	Manufacturer	Texas Instruments
Device Type	8-Bit Dual-Supply Bus Transceiver	Series	SN74LVC8T245-EP
Channels	8 (Octal)	Direction Control	DIR Pin (Referenced to V_CCA)
V_CCA Supply Voltage	1.65V to 5.5V	V_CCB Supply Voltage	1.65V to 5.5V
Output Type	Tri-State (3-State)	Output Enable	OE Pin, Active Low
Data Rate (Max)	500 Mbps	Propagation Delay (Typical)	8.2 ns
High-Level Output Current	-32 mA	Low-Level Output Current	32 mA
Input Capacitance	4 pF (Typical, A Port)	Output Capacitance	6 pF (Typical, A Port)
V_CC Isolation	Yes (If Either V_CC Input Is at GND)	Partial-Power-Down	I_off Support
ESD Protection (HBM)	±4000V (A114-A)	ESD Protection (MM)	±200V (A115-A)
ESD Protection (CDM)	±1000V (C101)	Latch-Up Performance	>100mA per JESD 78, Class II
Package / Case	24-TSSOP (0.173", 4.40mm Width)	Supplier Device Package	24-TSSOP (PW)
Package Body Size	4.40mm × 7.80mm	Pin Count	24
Mounting Type	Surface Mount	Operating Temperature	-55°C to +125°C
Grade	Enhanced Product (EP)	Quality	Controlled Baseline / One Assembly/Test Site
RoHS	ROHS3 Compliant	REACH Status	REACH Unaffected
MSL Level / Peak Reflow	Level-1-260C-UNLIM	ECCN	EAR99
Product Status	Active	Packaging	Tape & Reel (2,000 per Reel)
Device Marking	NH245MEP	Lead Finish	NiPdAu

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.

DESIGN REFERENCE

Circuit Considerations for SN74LVC8T245MPWREP

Power Supply & Control Configuration

The SN74LVC8T245MPWREP offers flexible dual-rail power supply and control configuration:

V_CCA Supply (Pin 1): Powers the A port and the control inputs (DIR, OE). Accepts 1.65V to 5.5V.
V_CCB Supply (Pin 24): Powers the B port. Accepts 1.65V to 5.5V. Can be independently set to a different voltage than V_CCA.
Direction Control (DIR, Pin 2): Referenced to V_CCA. When DIR is HIGH, data transmits from A to B. When DIR is LOW, data transmits from B to A.
Output Enable (OE, Pin 23): Active low. When OE is HIGH, both A and B outputs are in the high-impedance (Hi-Z) state. Tie OE to V_CC through a pullup resistor for Hi-Z during power-up/down.
Unused Inputs: All input circuitry on both A and B ports is always active. Unused inputs must be tied to a valid logic HIGH or LOW level to prevent excess I_CC and I_CCZ.

PCB and System-Level Guidance

Level translator performance depends on layout and component selection:

Decoupling Capacitors: Place 0.1µF ceramic capacitors close to both V_CCA and V_CCB pins for stable operation.
Signal Integrity: Match trace impedances and minimize trace lengths on high-speed data lines to support data rates up to 500 Mbps.
Power Sequencing: The V_CC isolation feature ensures that if either V_CC input is at GND, all outputs are in the high-impedance state. Either V_CCA or V_CCB can be ramped first.
Partial Power-Down: The I_off circuitry disables outputs during power-down, preventing current backflow. Ensure OE is properly controlled to avoid bus contention.
Verify the recommended PCB footprint from the official datasheet prior to production.

24-LEAD TSSOP (4.40mm × 7.80mm)

Pin Configuration Reference for SN74LVC8T245MPWREP

SN74LVC8T245

TSSOP TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The TSSOP package has 24 pins with a 4.40mm × 7.80mm body size. The device marking is NH245MEP.

1 V_CCA A Port Supply Voltage - 1.65V to 5.5V; Also Powers Control Inputs (DIR, OE)

2 DIR Direction Control - Referenced to V_CCA; HIGH = A-to-B, LOW = B-to-A

3 A1 Port A I/O - Channel 1, Referenced to V_CCA

4 A2 Port A I/O - Channel 2

5 A3 Port A I/O - Channel 3

6 A4 Port A I/O - Channel 4

7 A5 Port A I/O - Channel 5

8 A6 Port A I/O - Channel 6

9 A7 Port A I/O - Channel 7

10 A8 Port A I/O - Channel 8

11 GND Ground

12 GND Ground

13 B8 Port B I/O - Channel 8, Referenced to V_CCB

14 B7 Port B I/O - Channel 7

15 B6 Port B I/O - Channel 6

16 B5 Port B I/O - Channel 5

17 B4 Port B I/O - Channel 4

18 B3 Port B I/O - Channel 3

19 B2 Port B I/O - Channel 2

20 B1 Port B I/O - Channel 1

21 B1 Port B I/O - Channel 1

22 B2 Port B I/O - Channel 2

23 OE Output Enable - Active Low; HIGH = Hi-Z, Referenced to V_CCA

24 V_CCB B Port Supply Voltage - 1.65V to 5.5V

APPLICATION AREAS

Typical Applications for SN74LVC8T245MPWREP

Defense & Aerospace

Enhanced Product grade with controlled baseline, extended temperature range, and product traceability for mission-critical defense and aerospace applications.

Medical Instrumentation

Reliable dual-supply voltage translation with low propagation delay for precision medical instrumentation and diagnostic equipment.

Industrial Control Systems

Wide 1.65V to 5.5V supply range and robust ESD protection suit industrial automation and process control applications.

Mixed-Voltage Digital Buses

Enables communication between devices operating at different logic levels (1.8V, 2.5V, 3.3V, 5.5V) in mixed-voltage digital bus systems.

MCU-to-Peripheral Interfacing

Shifts GPIO and peripheral signal levels when connecting microcontrollers to sensors or modules that use different I/O voltages.

Data Acquisition Systems

High-speed 500 Mbps data rate and low propagation delay enable precise signal transmission in data acquisition systems.

REPLACEMENT GUIDANCE

Selecting an Alternative for SN74LVC8T245MPWREP

A replacement for the SN74LVC8T245MPWREP 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 product pages and datasheets.

Channels: 8-bit bidirectional

V_CCA range: 1.65V–5.5V

V_CCB range: 1.65V–5.5V

Data rate: 500 Mbps

Propagation delay: 8.2 ns

Package: 24-TSSOP

Temperature range: –55°C to 125°C

Grade: Enhanced Product (EP)

Pin-to-pin and functionally compatible alternatives (same family, different package or temperature grade):

Part Number	Package	Temperature Range	Grade / Qualification	Packaging	Carrier Quantity
SN74LVC8T245MPWREP	24-TSSOP	–55°C to +125°C	Enhanced Product (EP)	Tape & Reel	2,000
SN74LVC8T245MDWREP	24-SOIC	–55°C to +125°C	Enhanced Product (EP)	Tape & Reel	2,000
CLVC8T245MRHLTEP	24-VQFN	–55°C to +125°C	Enhanced Product (EP)	Tape & Reel	250

Functionally similar alternatives (different temperature grade, non-EP):

Part Number	Package	Temperature Range	Grade
SN74LVC8T245PW	24-TSSOP	–40°C to +85°C	Catalog

All alternative part numbers listed above are documented in the official Texas Instruments product pages and datasheets. The SN74LVC8T245MPWREP is the Enhanced Product (EP) grade version in a 24-pin TSSOP package with tape-and-reel packaging (2,000 units per reel). For the same EP grade in a 24-pin SOIC package, consider SN74LVC8T245MDWREP. For the same EP grade in a 24-pin VQFN package, consider CLVC8T245MRHLTEP. For DLA-qualified versions with the same temperature range, consider the V62/09615 series. For standard catalog-grade applications with –40°C to +85°C operation, consider SN74LVC8T245PW. Select based on qualification, package, and application requirements.

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MANUFACTURER INFORMATION

Texas Instruments

The SN74LVC8T245 (SN74LVC8T245MPWREP) belongs to the SN74LVC8T245-EP family of Enhanced Product 8-bit dual-supply bus transceivers from Texas Instruments. The device features a fully configurable dual-rail design that allows each port to operate over the full 1.65V to 5.5V power-supply range, enabling universal low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5.5V voltage nodes. The device includes V_CC isolation, I_off partial-power-down support, and robust ESD and latch-up protection. The SN74LVC8T245-EP is an Enhanced Product grade device featuring controlled baseline, one assembly/test site, one fabrication site, extended product life cycle, extended product-change notification, and product traceability. The device is available in 24-pin TSSOP, SOIC, and VQFN packages and is designed for defense, aerospace, medical, and other high-reliability applications.

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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: SN74LVC8T245MPWREP

Manufacturer: Texas Instruments

Package: 24-TSSOP (0.173", 4.40mm Width)

Series: 74LVC

Package/Case: 24-TSSOP (0.173", 4.40mm Width)

Packaging: Tape & Reel (TR)

Product Status: Active

Logic Type: Translation Transceiver

Number of Elements: 1

Number of Bits per Element: 8

Input Type: -

Output Type: 3-State

Current - Output High, Low: 32mA, 32mA

Voltage - Supply: 1.65V ~ 5.5V

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

Grade: -

Qualification: -

Mounting Type: Surface Mount

Supplier Device Package: 24-TSSOP

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Part Number: SN74LVC8T245MPWREP

Manufacturer: Texas Instruments

Package: 24-TSSOP (0.173", 4.40mm Width)

Category: Buffers, Drivers, Receivers, Transceivers

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