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

Texas Instruments SN74LVC1G79DCKRG4

Name: SN74LVC1G79DCKRG4
Brand: Texas Instruments
SKU: SN74LVC1G79DCKRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVC1G79DCKRG4

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: SN74LVC1G79DCKRG4.pdf

Description:: IC FF D-TYPE SNGL 1BIT SC70-5

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Product details

Overview

SN74LVC1G79DCKRG4 from Texas Instruments is a single positive-edge-triggered D-type flip-flop designed for 1.65V to 5.5V V_CC operation, delivering 6ns maximum propagation delay at 3.3V/50pF, ±24mA output drive, and I_off partial-power-down support - used in low-voltage data latching within microcontroller GPIO interfaces.

For engineers reviewing the SN74LVC1G79DCKRG4 datasheet, SN74LVC1G79DCKRG4 pinout, SN74LVC1G79DCKRG4 application, or SN74LVC1G79DCKRG4 equivalent, key selection considerations include its SC70-5 package footprint, 125°C operational temperature range, 1.3ns minimum setup time at 3.3V, and over-voltage tolerant inputs up to 5.5V independent of V_CC.

Technical Context

The SN74LVC1G79DCKRG4 implements a synchronous edge-triggered storage element with clock input sensitivity defined by voltage threshold rather than edge slew rate, enabling robust timing across varying signal rise times. Its CMOS input structure supports down-translation and accepts inputs up to 5.5V regardless of V_CC level.

Functional behavior follows standard D-flip-flop truth table: on each positive clock edge meeting setup/hold requirements, Q updates to match D; otherwise Q retains prior state. I_off circuitry forces high-impedance outputs during V_CC = 0V, preventing back-drive current and supporting hot-insertion in partial-power-down systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65V to 5.5V - enables direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains
t_pd (max)	6ns at 3.3V/50pF - ensures sub-10ns timing margin for 100MHz+ clock domains
I_OH/I_OL	±24mA at 3.3V - drives moderate capacitive loads without external buffers
I_off	±10µA max - guarantees safe isolation during power sequencing or standby
t_su (min)	1.2ns at 3.3V - allows tight integration with fast MCU GPIO clocks
Operating Temp	–40°C to +125°C - qualified for industrial and automotive under-hood environments
Input Voltage Range	0V to 5.5V - supports mixed-supply interfacing and level-shifting without external components

Pinout & Package

SN74LVC1G79DCKRG4 uses the SC70-5 (DCK) package: 2.00mm × 2.10mm, 5-pin surface-mount, lead-free, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 - D	Data input	Asynchronous data source synchronized to CLK edge; accepts 0–5.5V regardless of V_CC
2 - CLK	Positive-edge clock	Edge-triggered control signal; switching threshold fixed, not slew-rate dependent
3 - GND	Ground reference	Return path for all internal currents; must be low-impedance for noise immunity
4 - Q	Non-inverted output	Registered output reflecting D state after CLK↑; drives ±24mA at 3.3V
5 - V_CC	Power supply	Single supply rail (1.65–5.5V); powers logic core and I/O buffers

Key Features

Feature	Design Value
NanoFree™ packaging	Die-as-package construction reduces footprint to 2.00mm × 2.10mm - ideal for space-constrained portable electronics
I_off partial-power-down	Enables safe multi-rail system power sequencing by disabling outputs when V_CC = 0V
Over-voltage tolerant inputs	Accepts 5.5V signals even at 1.65V V_CC - eliminates need for external level shifters
Low ICC	10µA maximum supply current - extends battery life in always-on sensor nodes and IoT endpoints
125°C operation	Rated for extended temperature range - suitable for telecom infrastructure and industrial control cabinets

Applications

Test and Measurement	Enterprise Switching
Use Scenario: Capturing transient digital signals in logic analyzers and boundary-scan test fixtures. IC Role / Device Role / Timing Role: Single-bit data capture synchronized to system clock edges for deterministic sampling. Use Value: 6ns t_pd and 1.2ns t_su enable reliable sampling at >100MHz clock rates without added timing margin.	Use Scenario: Latching configuration bits in programmable switch fabric control planes. IC Role / Device Role / Timing Role: Glitch-free storage of register settings during hot-plug events or firmware updates. Use Value: I_off protection prevents back-drive into powered-down sections during partial reconfiguration.
Telecom Infrastructure	Personal Electronics
Use Scenario: Holding status flags in baseband processor interfaces for 5G small cells. IC Role / Device Role / Timing Role: Edge-triggered state retention across voltage domains (e.g., 1.8V PHY ↔ 3.3V controller). Use Value: Over-voltage tolerant inputs allow direct connection to 3.3V control lines while operating at 1.8V V_CC.	Use Scenario: Managing LED enable states or sensor interrupt routing in wearables and earbuds. IC Role / Device Role / Timing Role: Low-power data latch controlled by MCU GPIO pins for peripheral power gating. Use Value: 10µA ICC and 1.65V minimum V_CC support ultra-low-power sleep modes with data retention down to 1.5V.

Test and Measurement

Enterprise Switching

Use Scenario: Capturing transient digital signals in logic analyzers and boundary-scan test fixtures.

IC Role / Device Role / Timing Role: Single-bit data capture synchronized to system clock edges for deterministic sampling.

Use Value: 6ns t_pd and 1.2ns t_su enable reliable sampling at >100MHz clock rates without added timing margin.

Use Scenario: Latching configuration bits in programmable switch fabric control planes.

IC Role / Device Role / Timing Role: Glitch-free storage of register settings during hot-plug events or firmware updates.

Use Value: I_off protection prevents back-drive into powered-down sections during partial reconfiguration.

Telecom Infrastructure

Personal Electronics

Use Scenario: Holding status flags in baseband processor interfaces for 5G small cells.

IC Role / Device Role / Timing Role: Edge-triggered state retention across voltage domains (e.g., 1.8V PHY ↔ 3.3V controller).

Use Value: Over-voltage tolerant inputs allow direct connection to 3.3V control lines while operating at 1.8V V_CC.

Use Scenario: Managing LED enable states or sensor interrupt routing in wearables and earbuds.

IC Role / Device Role / Timing Role: Low-power data latch controlled by MCU GPIO pins for peripheral power gating.

Use Value: 10µA ICC and 1.65V minimum V_CC support ultra-low-power sleep modes with data retention down to 1.5V.

Equivalent & Alternatives

The following parts are listed as comparable options for similar D-type flip-flop applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G74DCKRG4	Dual D-flip-flop in same SC70-5 package; double the channel count but higher ICC (20µA)	Used where two synchronized bits are required per package - increases gate density but consumes more board area per function	Select when dual-bit synchronization is needed and layout space permits identical footprint reuse
NC7SZ74P5X	Single D-flip-flop in SC70-5; 3.5ns t_pd at 3.3V but only rated to 85°C and lacks I_off	Suitable for consumer-grade portable devices with lower thermal demands and no partial-power-down requirement	Choose for cost-sensitive, non-industrial designs where 125°C rating and I_off are unnecessary

Compared with SN74LVC1G79DCKRG4, SN74LVC1G74DCKRG4 offers functional duplication in identical packaging but trades off power efficiency for channel count, while NC7SZ74P5X delivers faster timing at reduced temperature and isolation capability - making SN74LVC1G79DCKRG4 optimal for industrial hot-swap and wide-temperature applications requiring guaranteed I_off behavior.

Availability

SN74LVC1G79DCKRG4 is available at Aetrix Electronics and suitable for test and measurement equipment, enterprise switching control logic, and telecom infrastructure requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVC1G79DCKRG4 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 company specializing in analog and embedded processing technologies, with leadership in logic, power management, and signal chain solutions.

The SN74LVC1G79DCKRG4 belongs to TI's LVC low-voltage CMOS logic family, engineered for interoperability across mixed-voltage systems and reliability in industrial, telecom, and portable electronics applications.

FAQ

What is the maximum clock frequency supported by SN74LVC1G79DCKRG4?

The SN74LVC1G79DCKRG4 supports a maximum clock frequency of 160MHz across its full operating temperature range (–40°C to +125°C) and supply voltage range (1.65V to 5.5V), as verified in TI's switching characteristics tables for CL = 15pF, 30pF, and 50pF loads. This rating holds under worst-case process/voltage/temperature conditions.

Does SN74LVC1G79DCKRG4 support partial power-down operation?

Yes, SN74LVC1G79DCKRG4 fully supports partial power-down via its I_off feature: when V_CC = 0V, all inputs and outputs enter high-impedance state with leakage limited to ±10µA, preventing back-drive current and enabling safe hot-insertion in multi-rail systems - a key requirement confirmed in Section 7.3.4 of the official datasheet.

Can SN74LVC1G79DCKRG4 accept 5V input signals while operating at 1.8V VCC?

Yes, SN74LVC1G79DCKRG4 accepts input voltages up to 5.5V independent of V_CC, including at 1.8V operation. This over-voltage tolerance is explicitly specified in Section 5.3 (Recommended Operating Conditions) and Section 5.1 (Absolute Maximum Ratings), eliminating need for external level-shifting circuitry in mixed-supply interfaces.

What is the propagation delay (tpd) of SN74LVC1G79DCKRG4 at 3.3V with 50pF load?

The maximum propagation delay (t_pd) of SN74LVC1G79DCKRG4 is 6ns at V_CC = 3.3V with a 50pF capacitive load and operating temperature of –40°C to +85°C, as documented in Section 1 Features and Table 5.9 of the datasheet. At +125°C, t_pd increases to 5ns maximum under same conditions.

Which package type does SN74LVC1G79DCKRG4 use, and what are its dimensions?

SN74LVC1G79DCKRG4 uses the SC70-5 (DCK) package: a 5-pin, lead-free, RoHS-compliant surface-mount package measuring 2.00mm × 2.10mm (length × width), as specified in TI's Mechanical, Packaging, and Orderable Information section and confirmed in the Package Information table of the datasheet.

SN74LVC1G79DCKRG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVC

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Function:: Standard

Type:: D-Type

Output Type:: Non-Inverted

Number of Elements:: 1

Number of Bits per Element:: 1

Clock Frequency:: 160 MHz

Max Propagation Delay @ V, Max CL:: 4.5ns @ 5V, 50pF

Trigger Type:: Positive Edge

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

Voltage - Supply:: 1.65V ~ 5.5V

Current - Quiescent (Iq):: 10 µA

Input Capacitance:: 4 pF

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-5

SN74LVC1G79DCKRG4 FAQ

1.How can I place an order for SN74LVC1G79DCKRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVC1G79DCKRG4 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 SN74LVC1G79DCKRG4 reliable?

The price and inventory of SN74LVC1G79DCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G79DCKRG4 is usually 5 days.

3.What payment methods are accepted for SN74LVC1G79DCKRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G79DCKRG4 transactions.

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SN74LVC1G79DCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVC1G79DCKRG4 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 SN74LVC1G79DCKRG4?

For technical support, including SN74LVC1G79DCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G79DCKRG4 requirements.

6.How does Aetrix verify that SN74LVC1G79DCKRG4 is sourced from the original manufacturer or authorized distributors?

All SN74LVC1G79DCKRG4 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 SN74LVC1G79DCKRG4 meets industry standards.

7.What is the process for return or replacement of SN74LVC1G79DCKRG4?

All SN74LVC1G79DCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G79DCKRG4, 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 SN74LVC1G79DCKRG4 part is unused and in its original packaging.

Return procedure for SN74LVC1G79DCKRG4:

1.Submit a request within 90 days.

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

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