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Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Texas Instruments SN74LV374ATPWREP

Name: SN74LV374ATPWREP
Brand: Texas Instruments
SKU: SN74LV374ATPWREP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LV374ATPWREP

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: SN74LV374ATPWREP.pdf

Description:: IC FF D-TYPE SNGL 8BIT 20TSSOP

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Product details

Overview

SN74LV374ATPWREP from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for 2-V to 5.5-V V_CC operation. It features I_off support for partial-power-down mode, ±16-mA output drive at 4.5–5.5 V, and operates across −40°C to 105°C. It is used in bidirectional bus drivers and I/O port buffering in industrial control backplanes.

For engineers reviewing the SN74LV374ATPWREP datasheet, SN74LV374ATPWREP pinout, SN74LV374ATPWREP application, or SN74LV374ATPWREP equivalent, key selection criteria include its 20-pin TSSOP package, 55–170 MHz maximum clock frequency (depending on V_CC), 3-state enable timing (t_dis/t_en ≤ 16 ns), and extended temperature qualification per JEDEC standards.

Technical Context

This device implements eight independent D-type latches synchronized to the rising edge of CLK, with asynchronous 3-state control via OE. Each output supports mixed-mode voltage operation-inputs tolerate up to 5.5 V regardless of V_CC, enabling interfacing between 3.3-V logic and 5-V buses.

The I_off circuitry actively disables outputs during power-down, blocking reverse current flow even when V_CC = 0 V and I/O pins are biased to 5.5 V. Output ground bounce (V_OLP) remains below 0.8 V and VOH undershoot exceeds 2.3 V at 3.3 V, ensuring signal integrity in high-speed capacitive loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2 V to 5.5 V - Enables interoperability across 2.5-V, 3.3-V, and 5-V logic domains without level shifters.
Max Clock Frequency	170 MHz at V_CC = 5 V - Supports high-throughput data latching in real-time I/O interfaces.
t_pd (CLK→Q)	5.9–13.5 ns at V_CC = 5 V - Ensures deterministic timing margin for synchronous bus handshaking.
I_OL/I_OH	±16 mA at V_CC = 4.5–5.5 V - Drives heavy capacitive loads (e.g., >50-pF traces) without external buffers.
Operating Temperature	−40°C to 105°C - Qualified per JEDEC extended-temperature reliability standards including HAST and temperature cycling.
I_off	≤5 µA at V_CC = 0 V - Prevents backflow current during hot-swap or partial system power-down.
Input Clamp Voltage	−0.5 V to 7 V - Allows safe connection to overvoltage sources without damage or latch-up.

Pinout & Package

TSSOP-20 (PW) package: 6.5-mm × 4.4-mm body, 0.65-mm pitch, thin profile (1.2-mm max height), RoHS-compliant NIPDAU finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1	OE	Active-low 3-state output enable - Controls all eight Q outputs simultaneously; does not affect internal latch state.
2–9	1Q–8Q	True outputs - Provide registered data on rising CLK edge; enter high-Z when OE = high.
10	GND	Ground reference - Shared return path for logic and output currents; must be low-inductance.
11	V_CC	Supply voltage - Powers internal logic and output drivers; bypassing with 0.1-µF ceramic required near pin.
12–19	1D–8D	Data inputs - Sampled on rising CLK edge; accept VIH/VIL thresholds scaled to V_CC.
20	CLK	Clock input - Edge-triggered; minimum pulse width 5 ns ensures reliable capture at 170 MHz.

Key Features

Feature	Design Value
Mixed-mode voltage interface	Inputs tolerate 0–5.5 V independent of V_CC, enabling direct connection to 5-V peripherals while powered from 3.3 V.
Controlled output switching	Low ground bounce (<0.8 V) and VOH undershoot (>2.3 V) minimize signal distortion on shared bus lines.
Partial-power-down protection	I_off limits leakage to ≤5 µA when V_CC = 0, preventing backfeed into unpowered rails during system staging.
ESD robustness	2000-V HBM, 200-V MM, and 1000-V CDM ratings ensure resilience in automated PCB assembly and field handling.
Extended temperature qualification	JEDEC-qualified for −40°C to 105°C with HAST, temperature cycling, and electromigration testing - suitable for under-hood or factory-floor deployment.

Applications

Industrial PLC Backplane Interface	Automated Test Equipment (ATE) Signal Conditioning
Use Scenario: Isolating and latching parallel address/data signals between a microcontroller and modular I/O cards in a DIN-rail mounted PLC. IC Role / Device Role / Timing Role: Octal D-flip-flop acting as a buffered, clock-synchronized register for bidirectional bus arbitration. Use Value: 3-state outputs prevent bus contention during card hot-swap; I_off blocks current flow when modules are removed mid-operation.	Use Scenario: Capturing and holding test stimulus patterns from a pattern generator before applying them to DUT pins. IC Role / Device Role / Timing Role: Synchronous data latch providing precise setup/hold timing (t_su = 3 ns, t_h = 2 ns at 5 V) for sub-10-ns test cycles. Use Value: 170-MHz max clock rate and 5.9-ns propagation delay enable accurate timing alignment in high-speed digital test vectors.
Medical Imaging Data Acquisition Module	Ruggedized Communication Gateway
Use Scenario: Buffering parallel sensor data streams (e.g., ADC outputs) before serialization in a CT scanner front-end board. IC Role / Device Role / Timing Role: Input register synchronizing asynchronous analog-to-digital conversion results to a system clock domain. Use Value: −40°C to 105°C rating ensures stable operation inside sealed, fanless enclosures; low VOL/VOLP maintains noise margin in noisy imaging environments.	Use Scenario: Level-shifting and isolating CAN/RS-485 transceiver control lines from a 3.3-V MCU in a railway signaling gateway. IC Role / Device Role / Timing Role: Voltage-tolerant I/O buffer enabling 5-V transceiver interface while powered from 3.3-V rail. Use Value: Mixed-mode inputs accept 5-V control signals directly; 3-state outputs allow dynamic bus sharing among multiple communication peripherals.

Industrial PLC Backplane Interface

Automated Test Equipment (ATE) Signal Conditioning

Use Scenario: Isolating and latching parallel address/data signals between a microcontroller and modular I/O cards in a DIN-rail mounted PLC.

IC Role / Device Role / Timing Role: Octal D-flip-flop acting as a buffered, clock-synchronized register for bidirectional bus arbitration.

Use Value: 3-state outputs prevent bus contention during card hot-swap; I_off blocks current flow when modules are removed mid-operation.

Use Scenario: Capturing and holding test stimulus patterns from a pattern generator before applying them to DUT pins.

IC Role / Device Role / Timing Role: Synchronous data latch providing precise setup/hold timing (t_su = 3 ns, t_h = 2 ns at 5 V) for sub-10-ns test cycles.

Use Value: 170-MHz max clock rate and 5.9-ns propagation delay enable accurate timing alignment in high-speed digital test vectors.

Medical Imaging Data Acquisition Module

Ruggedized Communication Gateway

Use Scenario: Buffering parallel sensor data streams (e.g., ADC outputs) before serialization in a CT scanner front-end board.

IC Role / Device Role / Timing Role: Input register synchronizing asynchronous analog-to-digital conversion results to a system clock domain.

Use Value: −40°C to 105°C rating ensures stable operation inside sealed, fanless enclosures; low VOL/VOLP maintains noise margin in noisy imaging environments.

Use Scenario: Level-shifting and isolating CAN/RS-485 transceiver control lines from a 3.3-V MCU in a railway signaling gateway.

IC Role / Device Role / Timing Role: Voltage-tolerant I/O buffer enabling 5-V transceiver interface while powered from 3.3-V rail.

Use Value: Mixed-mode inputs accept 5-V control signals directly; 3-state outputs allow dynamic bus sharing among multiple communication peripherals.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type latch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC374APWRE4	Lower V_CC range (1.65–3.6 V); no extended temperature rating (−40°C to 105°C not guaranteed); higher speed at 3.3 V (f_max = 190 MHz).	Not qualified for extended temperature or enhanced reliability; unsuitable for automotive or industrial deployments requiring DMS support.	Select only for commercial-grade 3.3-V systems where cost and speed outweigh environmental ruggedness.
SN74LV574APWRE4	Same V_CC range and temp grade, but non-inverting outputs only; lacks OE-controlled 3-state (outputs always active or latched).	Cannot drive shared buses; requires external bus switches or pull-ups for multi-drop configurations.	Choose only when bus isolation is unnecessary and fixed-output drive suffices.

Compared with SN74LV374ATPWREP, SN74LVC374APWRE4 trades extended temperature reliability for higher speed in narrow-voltage systems, while SN74LV574APWRE4 sacrifices 3-state flexibility for simplified output architecture - neither offers drop-in replacement capability due to functional and qualification gaps.

Availability

SN74LV374ATPWREP is available at Aetrix Electronics and suitable for industrial PLC backplanes, medical imaging acquisition modules, and ruggedized communication gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LV374ATPWREP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in high-reliability logic and interface solutions.

The SN74LV374A-EP product line delivers enhanced-product versions of standard logic devices, engineered specifically for aerospace, defense, and industrial applications demanding extended temperature operation, controlled baseline manufacturing, and full DMS support.

FAQ

What is the operating temperature range of the SN74LV374ATPWREP?

The SN74LV374ATPWREP is rated for continuous operation from −40°C to 105°C. This extended range is validated per JEDEC standards including HAST, temperature cycling, and electromigration testing - making it suitable for under-hood automotive subsystems, factory-floor controllers, and sealed medical equipment where ambient temperatures exceed commercial-grade limits. The SN74LV374ATPWREP maintains full electrical specifications across this entire range.

Does the SN74LV374ATPWREP support mixed-voltage interfacing?

Yes, the SN74LV374ATPWREP supports mixed-mode voltage operation: its inputs tolerate voltages from −0.5 V to 7 V regardless of V_CC, allowing direct connection to 5-V peripherals while powered from a 3.3-V supply. This eliminates external level shifters in hybrid-voltage systems. The SN74LV374ATPWREP also features output voltage compliance up to V_CC + 0.5 V, further enhancing interoperability.

How does the I_off feature function in the SN74LV374ATPWREP?

The I_off circuitry in the SN74LV374ATPWREP disables all outputs when V_CC = 0 V, limiting reverse current to ≤5 µA even if I/O pins are biased to 5.5 V. This prevents damaging backflow into unpowered sections of a system during hot-swap, partial power-down, or staged boot sequences. The SN74LV374ATPWREP retains internal latch states during I_off activation, enabling seamless resumption upon power restoration.

What is the maximum clock frequency supported by the SN74LV374ATPWREP?

The SN74LV374ATPWREP supports a maximum clock frequency of 170 MHz at V_CC = 5 V and 110 MHz at V_CC = 3.3 V. These values are guaranteed across the full −40°C to 105°C temperature range and reflect worst-case timing margins derived from t_w (minimum CLK pulse width) and t_pd. The SN74LV374ATPWREP achieves this performance while maintaining 3 ns setup time (t_su) and 2 ns hold time (t_h) at 5 V.

Is the SN74LV374ATPWREP pin-compatible with standard SN74LV374A variants?

Yes, the SN74LV374ATPWREP uses the same 20-pin TSSOP (PW) package and identical pinout as the commercial SN74LV374APWRE4 and automotive SN74LV374A-Q1. All share identical terminal assignments, electrical behavior, and timing characteristics - differing only in qualification level (enhanced product), marking (LV374AEP), and packaging (tape-and-reel quantity and MSL rating). The SN74LV374ATPWREP can be substituted without PCB layout changes.

SN74LV374ATPWREP Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LV

Package/Case:: 20-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Standard

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 1

Number of Bits per Element:: 8

Clock Frequency:: 170 MHz

Max Propagation Delay @ V, Max CL:: 10.1ns @ 5V, 50pF

Trigger Type:: Positive Edge

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

Voltage - Supply:: 2V ~ 5.5V

Current - Quiescent (Iq):: 20 µA

Input Capacitance:: 2.9 pF

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-TSSOP

SN74LV374ATPWREP FAQ

1.How can I place an order for SN74LV374ATPWREP through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LV374ATPWREP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SN74LV374ATPWREP reliable?

The price and inventory of SN74LV374ATPWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV374ATPWREP is usually 5 days.

3.What payment methods are accepted for SN74LV374ATPWREP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV374ATPWREP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LV374ATPWREP?

SN74LV374ATPWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LV374ATPWREP order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SN74LV374ATPWREP?

For technical support, including SN74LV374ATPWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV374ATPWREP requirements.

6.How does Aetrix verify that SN74LV374ATPWREP is sourced from the original manufacturer or authorized distributors?

All SN74LV374ATPWREP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LV374ATPWREP meets industry standards.

7.What is the process for return or replacement of SN74LV374ATPWREP?

All SN74LV374ATPWREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV374ATPWREP, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SN74LV374ATPWREP part is unused and in its original packaging.

Return procedure for SN74LV374ATPWREP:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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