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Texas Instruments SN74LVC374ANSRG4
- Part No.:
- SN74LVC374ANSRG4
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74LVC374ANSRG4.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,402
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Product details
Overview
SN74LVC374ANSRG4 from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features 8-bit data latching on the rising clock edge, independent output-enable control (OE), 5.5-V-tolerant inputs, and a maximum propagation delay of 7 ns at 3.3 V - enabling high-speed bus interfacing in mixed-voltage systems.
For engineers reviewing the SN74LVC374ANSRG4 datasheet, SN74LVC374ANSRG4 pinout, SN74LVC374ANSRG4 application, or SN74LVC374ANSRG4 equivalent, key selection criteria include its 3-state drive capability (±24 mA), Ioff support for live insertion, 1.65–3.6 V supply flexibility, and compatibility with 5-V input logic in 3.3-V systems.
Technical Context
This device implements eight independent D-type flip-flops, each synchronized to the rising edge of CLK. Output states are controlled by OE: when low, outputs reflect Q values; when high, all outputs enter high-impedance mode regardless of CLK or D activity.
It supports mixed-mode signal operation - inputs tolerate up to 5.5 V while VCC operates as low as 1.65 V - making it suitable for voltage-level translation between 5-V and 3.3-V domains. The Ioff feature disables outputs and blocks current backflow when VCC = 0 V, enabling partial-power-down and hot-swap capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - enables operation across LVC-family logic rails including battery-backed or low-power 1.8-V systems. |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to legacy 5-V logic without level shifters. |
| Max Clock Frequency | 100 MHz at VCC = 3.3 V - supports high-speed data capture in memory interfaces and peripheral buses. |
| Propagation Delay (tpd) | 7 ns max at VCC = 3.3 V, TA = 85°C - ensures tight timing margins in synchronous designs. |
| Output Drive Strength | ±24 mA per output at VCC = 3.0 V - drives multiple CMOS loads or light capacitive buses without external buffers. |
| Ioff Current | ±20 μA max at VI/VO = 5.5 V - prevents damaging back-current during power sequencing or hot insertion. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and computing applications. |
Pinout & Package
SN74LVC374ANSRG4 is packaged in a 20-pin SOP (NS) package with 12.80 mm × 7.50 mm body size and standard 0.65-mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable Input | Active-low global control: asserts high-impedance state on all eight Q outputs independently of clock or data. |
| 2 (1Q) | Output 1 | 3-state buffered output reflecting latch state of D1 on previous CLK↑ edge. |
| 3 (1D) | Data Input 1 | Asynchronous data input sampled on rising CLK edge; 5.5-V tolerant. |
| 4 (2D) | Data Input 2 | Independent D-input for second flip-flop; electrically identical to 1D. |
| 5 (2Q) | Output 2 | 3-state output synchronized to CLK↑ and gated by OE. |
| 10 (GND) | Ground Reference | Primary return path for all internal logic and output currents. |
| 11 (CLK) | Clock Input | Rising-edge-triggered global clock; Schmitt-trigger input not specified - requires clean monotonic transitions. |
| 20 (VCC) | Power Supply | Single supply rail supporting 1.65–3.6 V; bypass capacitor required per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.65–3.6 V) | Enables interoperability across 1.8-V, 2.5-V, and 3.3-V logic domains without voltage translators. |
| 5.5-V-tolerant inputs | Permits direct interface to 5-V microcontrollers or legacy peripherals while powered from 3.3 V. |
| Ioff partial-power-down support | Prevents current backflow when VCC = 0 V, allowing safe insertion into live backplanes or hot-swap modules. |
| 3-state outputs with independent OE | Allows bidirectional bus sharing among multiple devices without external bus transceivers. |
| Low dynamic power consumption | Typical Cpd = 54.5 pF at 3.3 V enables efficient high-frequency operation with minimal switching noise. |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Bus Interface |
|---|---|
Use Scenario: Adding parallel digital I/O to a compact PLC controller using a 3.3-V MCU with limited native GPIO. IC Role / Device Role / Timing Role: Acts as an octal latch buffer, capturing and holding 8-bit sensor or actuator data on CLK edges while isolating the MCU bus via 3-state outputs. Use Value: Eliminates need for discrete level shifters and reduces PCB footprint versus discrete logic solutions - supports 100-MHz burst reads from fast sensors. |
Use Scenario: Interfacing a 3.3-V ARM Cortex-M4 to legacy 5-V peripheral ICs (e.g., display drivers, ADCs) over a shared data bus. IC Role / Device Role / Timing Role: Provides voltage translation and bus isolation: accepts 5-V inputs, latches data synchronously, and drives 3.3-V bus lines with ±24-mA strength. Use Value: Enables direct 5-V-to-3.3-V communication without external translators; Ioff protects MCU during peripheral power cycling. |
| Server Baseboard Management Controller (BMC) | Consumer Appliance Control Panel |
Use Scenario: Managing status LEDs, fan tachometer inputs, and thermal sensor readouts in a 1U server BMC where space and power efficiency are critical. IC Role / Device Role / Timing Role: Functions as a configurable I/O expander: latches LED control bits and samples tach signals on rising CLK, with OE enabling dynamic bus release. Use Value: Reduces FPGA or ASIC I/O count; 1.65-V minimum VCC supports ultra-low-power sleep modes; 85°C rating matches server thermal envelope. |
Use Scenario: Driving segmented LED displays and reading keypad matrix rows/columns in a washing machine control board operating from a noisy 3.3-V SMPS rail. IC Role / Device Role / Timing Role: Serves as a robust input sampler and output driver: captures keypad scans synchronously and sinks/sinks LED current directly. Use Value: ±24-mA drive eliminates external transistor arrays; 5.5-V tolerance accommodates ESD-prone front-panel wiring; SOIC-20 simplifies automated assembly. |
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 |
|---|---|---|---|
| SN74LVC574APWR | Same functionality and pinout; TSSOP-20 package instead of SOP-20; identical electrical specs and timing. | No mechanical or functional change - differs only in package footprint and thermal resistance (RθJA = 102.5°C/W vs 118°C/W for NS). | Select SN74LVC574APWR if board layout uses TSSOP-20 footprints or requires slightly better thermal performance. |
| 74LVC374PW,118 (Nexperia) | Functionally equivalent but rated for –40°C to +125°C; slightly higher max tpd (8.5 ns @ 3.3 V); RoHS-compliant with different marking. | Supports extended temperature automotive or outdoor industrial use where SN74LVC374ANSRG4's 85°C limit is insufficient. | Choose 74LVC374PW,118 only when full industrial temp range is mandatory and TI part availability is constrained. |
Compared with SN74LVC374ANSRG4, SN74LVC574APWR offers identical logic behavior in a smaller TSSOP package, while 74LVC374PW,118 extends operational temperature to 125°C - both require no schematic changes but may impact PCB layout or thermal design.
Availability
SN74LVC374ANSRG4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus interface, server BMC subsystems, and consumer appliance control panels requiring stable component supply and long-term manufacturability.
Supply support for SN74LVC374ANSRG4 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 U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in logic, power management, and interface ICs.
The SN74LVC374A series belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-voltage, high-speed, mixed-signal interfacing in space-constrained industrial and computing systems.
FAQ
What is the maximum clock frequency supported by SN74LVC374ANSRG4?
The SN74LVC374ANSRG4 supports a maximum clock frequency of 100 MHz when operated at VCC = 3.3 V and TA ≤ 85°C. At lower supply voltages (e.g., 1.8 V), the maximum usable frequency drops to 55 MHz under the same temperature conditions, as specified in the timing requirements table of the official datasheet.
Does SN74LVC374ANSRG4 support 5-V input signals while powered from 3.3 V?
Yes, SN74LVC374ANSRG4 supports input voltages up to 5.5 V regardless of VCC level - including when VCC = 3.3 V. This 5-V-tolerant input capability is explicitly guaranteed in the datasheet and enables seamless interfacing with legacy 5-V logic without external level-shifting circuitry.
Can SN74LVC374ANSRG4 be used in hot-swap or partial-power-down systems?
Yes, SN74LVC374ANSRG4 incorporates Ioff circuitry that disables outputs and limits off-state current to ±20 μA when VCC = 0 V. This feature is validated per JESD 78 and allows safe insertion into live backplanes or operation in systems where power rails sequence independently.
What is the output drive strength of SN74LVC374ANSRG4 at 3.3 V?
At VCC = 3.3 V, SN74LVC374ANSRG4 delivers ±24 mA per output in the low- or high-state, as tested under IOL = 24 mA and IOH = –24 mA conditions. This drive strength supports direct connection to multiple CMOS loads or moderate-capacitance buses without external buffers.
Is SN74LVC374ANSRG4 pin-compatible with other members of the SN74LVC374A family?
Yes, SN74LVC374ANSRG4 shares identical pin configuration and function mapping with all SN74LVC374A variants (e.g., SN74LVC374APWR, SN74LVC374ADBR), including OE, CLK, Dn, and Qn assignments. Differences exist only in package type, marking, and packaging format - not in pinout or logic behavior.
SN74LVC374ANSRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 100 MHz
- Max Propagation Delay @ V, Max CL:
- 7ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Current - Quiescent (Iq):
- 10 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
SN74LVC374ANSRG4 FAQ
1.How can I place an order for SN74LVC374ANSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC374ANSRG4 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 SN74LVC374ANSRG4 reliable?
The price and inventory of SN74LVC374ANSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC374ANSRG4 is usually 5 days.
3.What payment methods are accepted for SN74LVC374ANSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC374ANSRG4 transactions.
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4.How is shipping managed for SN74LVC374ANSRG4?
SN74LVC374ANSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC374ANSRG4 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 SN74LVC374ANSRG4?
For technical support, including SN74LVC374ANSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC374ANSRG4 requirements.
6.How does Aetrix verify that SN74LVC374ANSRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC374ANSRG4 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 SN74LVC374ANSRG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC374ANSRG4?
All SN74LVC374ANSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC374ANSRG4, 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 SN74LVC374ANSRG4 part is unused and in its original packaging.
Return procedure for SN74LVC374ANSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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