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Home Products Integrated Circuits (ICs)Logic - Buffers, Drivers, Receivers, Transceivers~~SN74LVC245APWRG3~~

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SN74LVC245APWRG3 - Texas Instruments

Manufacturer Part Number: SN74LVC245APWRG3

Manufacturer: Texas Instruments

Allelco Part Number: 98D-SN74LVC245APWRG3

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 31,343 pcs available, New & Original

Parts Description: IC TXRX NON-INVERT 3.6V 20TSSOP

Package: 20-TSSOP

Data sheet: SN74LVC245APWRG.pdf

PCN Other
2.73KHz.pdf

PCN Packaging
Reels 19/Apr/2018.pdf Reel 10/Jul/2018.pdf

HTML Datasheet
Logic Guide.pdf SN74LVC245A.pdf

RoHs Status: ROHS3 Compliant

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Specifications

SN74LVC245APWRG3 Tech Specifications
Texas Instruments - SN74LVC245APWRG3 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN74LVC245APWRG3

Product Attribute	Attribute Value
Manufacturer	Texas Instruments
Voltage - Supply	1.65V ~ 3.6V
Supplier Device Package	20-TSSOP
Series	74LVC
Package / Case	20-TSSOP (0.173', 4.40mm Width)
Package	Tape & Reel (TR)
Output Type	3-State
Operating Temperature	-40°C ~ 125°C (TA)

Product Attribute	Attribute Value
Number of Elements	1
Number of Bits per Element	8
Mounting Type	Surface Mount
Logic Type	Transceiver, Non-Inverting
Input Type	-
Current - Output High, Low	24mA, 24mA
Base Product Number	74LVC245

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

How does the SN74LVC245APWRG3 handle bidirectional data flow in a 3.3V system with mixed-voltage peripherals?: The SN74LVC245APWRG3 supports direction-controlled bidirectional communication through its DIR pin, enabling seamless data transfer between a 3.3V microcontroller and lower-voltage (down to 1.65V) or higher-tolerance peripherals. Its non-inverting 3-state outputs allow safe bus sharing, and the device’s input voltage tolerance up to 5.5V prevents damage when interfacing with 5V logic, making it suitable for level-translating applications without additional components.

What are the key differences between the SN74LVC245APWRG3 and the SN74LVCH245APWR in terms of I/O characteristics and system integration?: While both devices are 8-bit non-inverting transceivers in 20-TSSOP packages, the SN74LVC245APWRG3 offers symmetrical ±24mA output drive at 3.3V, providing stronger pull-up and pull-down capability compared to the LVCH variant, which prioritizes lower capacitance and faster edge rates. The LVC version’s higher current drive makes it better suited for driving longer traces or multiple loads, whereas the LVCH is optimized for high-speed, low-power buses with minimal signal degradation.

Can the SN74LVC245APWRG3 be used in a 1.8V system, and what performance trade-offs should be expected?: Yes, the SN74LVC245APWRG3 operates down to 1.65V, supporting 1.8V logic levels. However, at this lower supply voltage, the output high voltage (VOH) may drop closer to the minimum specification, reducing noise margin. Output transition times will also increase slightly due to reduced overdrive voltage, which may affect timing margins in high-speed interfaces. Careful validation of setup and hold times is recommended in such low-voltage designs.

How does the SN74LVC245APWRG3 compare to the 74LCX245MTCX in terms of power consumption and speed for battery-powered applications?: The SN74LVC245APWRG3 typically consumes less quiescent current than the 74LCX245MTCX, especially at lower frequencies, due to its advanced CMOS process. While both support similar propagation delays (~4–6 ns at 3.3V), the LVC family exhibits lower dynamic power dissipation per transition, making the SN74LVC245APWRG3 more favorable for portable or energy-sensitive systems where extended battery life is critical.

What layout considerations are essential when placing the SN74LVC245APWRG3 on a high-density PCB with multiple bus transceivers?: Due to its 20-TSSOP package (4.40mm width), the SN74LVC245APWRG3 requires careful thermal and signal integrity planning. Ensure adequate clearance for solder joints and reflow profiling, especially in tape-and-reel assembly. Keep output traces short and matched in length when driving parallel buses to minimize skew. Place decoupling capacitors (100nF) as close as possible to VCC and GND pins to suppress switching noise, particularly when enabling/disabling outputs at high frequencies.

Is the SN74LVC245APWRG3 suitable for hot-swapping or live insertion scenarios in industrial backplane designs?: The SN74LVC245APWRG3 lacks built-in hot-swap protection features such as slew rate control or current limiting, so it is not inherently designed for live insertion. However, with external series resistors (e.g., 22–100Ω) on I/O lines and proper power sequencing, it can be used in controlled hot-swap environments. The 3-state outputs help isolate the bus during power-up, but system-level design must ensure VCC stability before enabling output drivers.

How does the operating temperature range of the SN74LVC245APWRG3 influence its use in automotive or industrial control systems?: With an operating range of -40°C to 125°C, the SN74LVC245APWRG3 meets the requirements for many industrial and automotive under-hood applications. At elevated temperatures, propagation delay increases slightly and output drive strength may reduce, but the device maintains functional operation across the full range. This makes it viable for engine control units or factory automation systems where ambient temperatures exceed commercial-grade limits.

What happens to the output state of the SN74LVC245APWRG3 when the OE (Output Enable) pin is deasserted during active data transfer?: When OE is pulled high, all outputs of the SN74LVC245APWRG3 enter a high-impedance (Hi-Z) state within a specified disable time (typically 5–8 ns at 3.3V), effectively disconnecting the transceiver from the bus. This allows other devices to drive the shared bus without contention. The transition is glitch-resistant under normal conditions, but designers should account for disable timing relative to clock edges in synchronous systems to avoid metastability.

Can the SN74LVC245APWRG3 drive capacitive loads typical of ribbon cables or backplane traces without additional buffering?: The SN74LVC245APWRG3 can drive moderate capacitive loads (up to ~50 pF per line) directly, thanks to its 24mA output drive strength. For longer ribbon cables (100+ pF), signal integrity may degrade due to reflections and rise time slowing. In such cases, adding series termination resistors (e.g., 33Ω) near the output pins helps dampen ringing and improve waveform fidelity without requiring additional buffers.

How does the moisture sensitivity level (MSL 1) of the SN74LVC245APWRG3 affect handling and storage in high-volume manufacturing?: Rated MSL 1 (unlimited floor life), the SN74LVC245APWRG3 can be stored and handled under normal ambient conditions without dry packing or bake requirements. This simplifies logistics in surface-mount production lines, reducing preprocessing steps and minimizing delays during PCB assembly, especially in high-mix manufacturing environments where component turnover is frequent.

What design precautions are needed when using the SN74LVC245APWRG3 in a multi-drop SPI or I²C extension application?: When extending SPI or I²C buses, the SN74LVC245APWRG3 can regenerate signals across longer distances, but bus capacitance and pull-up resistor selection become critical. The transceiver’s input hysteresis improves noise immunity, but excessive capacitive loading from multiple nodes may require reducing pull-up values or segmenting the bus. Ensure OE and DIR controls are synchronized with protocol timing to avoid bus collisions during direction changes.

How does the SN74LVC245APWRG3 perform in partial-power-down scenarios where VCC drops below 1.65V during system brownouts?: Below 1.65V, the SN74LVC245APWRG3 may not maintain valid logic levels or output control, potentially causing undefined behavior. Inputs should not be driven when VCC is below the recommended minimum, as this can forward-bias internal protection diodes. For systems prone to brownouts, incorporate power supervision circuits to disable the transceiver via OE before VCC falls out of specification, preventing latch-up or erroneous bus activity.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN74LVC245APWRG3

Product Attribute
Part Number	SN74LVC245APWRG3-J	SN74LVC245APWRG4	SN74LVC245APWRE4	SN74LVC245APWR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Voltage - Supply	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Output Type	-	Current - Unbuffered	Voltage - Buffered	-
Number of Bits per Element	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Input Type	-	-	-	Differential
Logic Type	-	-	-	-
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Current - Output High, Low	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Number of Elements	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Series	-	-	-	-

SN74LVC245APWRG3 Datasheet PDF

Download SN74LVC245APWRG3 pdf datasheets and Texas Instruments documentation for SN74LVC245APWRG3 - Texas Instruments.

PCN Other: 2.73KHz.pdf
PCN Packaging: Reels 19/Apr/2018.pdf Reel 10/Jul/2018.pdf
HTML Datasheet: Logic Guide.pdf SN74LVC245A.pdf

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Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
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