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Texas Instruments SN74LVC374APW
- Part No.:
- SN74LVC374APW
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC374APW.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:264
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Product details
Overview
SN74LVC374APW 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 20-pin TSSOP packaging, 8-bit data latching on CLK rising edge, OE-controlled high-impedance outputs, and 5.5-V-tolerant inputs-enabling mixed-voltage interfacing in bus buffer and I/O port applications.
For engineers reviewing the SN74LVC374APW datasheet, SN74LVC374APW pinout, SN74LVC374APW application, or SN74LVC374APW equivalent, key selection criteria include tpd ≤ 7.6 ns at 3.3 V, Ioff support for live insertion, 32-mA output drive capability, and compatibility with 100-MHz clock rates in industrial and embedded systems.
Technical Context
This device implements eight independent D-type flip-flops, each triggered on the positive edge of CLK. Output states are latched synchronously and placed into high-impedance (Z) when OE is high, enabling bidirectional bus control without external pull-ups or interface logic.
It supports mixed-mode signal operation: inputs tolerate up to 5.5 V regardless of VCC (1.65–3.6 V), allowing direct interfacing between 5-V legacy logic and 3.3-V system domains. The Ioff feature disables outputs and blocks current backflow during partial power-down, satisfying JEDEC JESD78 latch-up and JESD17 reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables operation across low-power and standard 3.3-V supply rails |
| tpd (CLK→Q) | 7.6 ns max at VCC = 3.3 V, TA = 125°C - supports reliable 100-MHz synchronous data capture |
| IOL / IOH | ±24 mA at VCC = 3.0 V - drives multiple LVC/LVT loads or light capacitive buses without buffers |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct connection to 5-V microcontrollers or peripherals without level shifters |
| Ioff Current | ±20 μA max at VI/VO = 5.5 V - prevents damaging back-current during hot-swap or partial power-down |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature environments |
| ESD Rating | 2000-V HBM, 1000-V CDM - meets robust handling requirements for automated assembly |
Pinout & Package
TSSOP-20 package (4.4 mm × 6.5 mm, 0.65 mm pitch), thermally enhanced for surface-mount PCBs with JEDEC-standard footprint and lead finish (NIPDAU).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable input | Active-low control: drives all Q outputs to high-impedance when high; no effect on internal latch state |
| 2–9, 12–19 (1Q–8Q, 1D–8D) | Output / Data input pairs | Eight independent D-flip-flop channels; Q reflects D state after CLK↑; inputs accept 5.5-V signals |
| 10 (GND) | Ground reference | Primary return path for all I/O and internal logic; must be low-impedance and decoupled |
| 11 (CLK) | Clock input | Rising-edge sensitive; latches all eight D inputs simultaneously; accepts fast edges (≤10 ns/V transition rate) |
| 20 (VCC) | Power supply | Single 1.65–3.6-V rail; requires local 0.1-μF bypass capacitor per VCC pin |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Outputs | Enables shared-bus architectures by isolating outputs without external tri-state logic or pull resistors |
| Mixed-Voltage Translation | 5.5-V-tolerant inputs allow direct interfacing between 5-V controllers and 3.3-V FPGAs or processors |
| Ioff Protection | Prevents current flow from powered I/O lines into unpowered VCC, supporting safe live insertion in modular systems |
| Low Dynamic Power | Typical Cpd = 54.5 pF per flip-flop at 3.3 V - reduces switching noise and supply current at 10 MHz |
| High-Speed Timing | Max fclock = 100 MHz at VCC = 3.3 V, TA ≤ 85°C - suitable for high-throughput data buffering in real-time interfaces |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Bus Interface |
|---|---|
|
Use Scenario: Adding parallel digital I/O to a Cortex-M4-based controller in a factory automation module. IC Role / Device Role / Timing Role: Acts as an 8-bit synchronized input latch and output driver, isolating MCU GPIO from noisy field-side sensors and actuators. Use Value: Enables deterministic sampling via CLK edge-triggering and eliminates bus contention using OE-controlled 3-state outputs. |
Use Scenario: Interfacing a 5-V legacy display controller to a 3.3-V SoC in a medical diagnostic device. IC Role / Device Role / Timing Role: Translates 5-V pixel/data signals down to 3.3-V logic levels while latching data on rising CLK for timing alignment. Use Value: Eliminates discrete level shifters and provides 32-mA drive strength to meet display bus capacitance requirements. |
| Server Baseboard Management (BMC) | Automotive Infotainment Gateway |
|
Use Scenario: Buffering status LEDs, fan tachometer inputs, and reset signals in a server BMC subsystem. IC Role / Device Role / Timing Role: Provides isolated, glitch-free signal conditioning and latching for fault monitoring and control sequencing. Use Value: Ioff protection ensures safe hot-swap of BMC daughterboards without disrupting mainboard power domains. |
Use Scenario: Managing CAN/LIN peripheral I/O expansion in a head-unit gateway with mixed 5-V sensor and 3.3-V processor domains. IC Role / Device Role / Timing Role: Synchronizes and buffers diagnostic and configuration signals between vehicle subnetworks. Use Value: 100-MHz timing margin accommodates burst-mode diagnostics; 5.5-V tolerance handles automotive transceiver voltage swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC574APW | Non-inverting transparent latch (no edge-triggered clock); identical VCC range and pinout | Lacks synchronous edge-triggering; suited for level-sensitive data capture, not clock-synchronized transfer | Select when asynchronous gating or latch-enable timing is required instead of CLK-edge registration |
| 74LVC374PW,118 (Nexperia) | Same functional spec, but rated only to 85°C (not 125°C); slightly higher tpd (8.5 ns max at 3.3 V) | Not qualified for extended industrial temp range; lower ESD rating (1500-V HBM vs TI's 2000-V) | Acceptable for commercial-temp consumer designs where cost sensitivity outweighs thermal margin needs |
Compared with SN74LVC574APW and 74LVC374PW,118, the SN74LVC374APW uniquely delivers guaranteed 100-MHz operation with edge-triggered synchronization, full –40°C to 85°C qualification, and superior Ioff and ESD robustness-making it optimal for mission-critical industrial and automotive control interfaces.
Availability
SN74LVC374APW is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus interface, server baseboard management, and automotive infotainment gateway applications requiring stable component supply and long-term manufacturability.
Supply support for SN74LVC374APW 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 solutions, with over 50 years of innovation in logic and interface ICs.
The SN74LVC374APW belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for high-speed, low-power, mixed-voltage interfacing in industrial, computing, and automotive systems where signal integrity and power efficiency are critical.
FAQ
What is the maximum clock frequency supported by the SN74LVC374APW?
The SN74LVC374APW supports a maximum clock frequency of 100 MHz at VCC = 3.3 V and TA ≤ 85°C, as specified in the Switching Characteristics table. At full industrial temperature (–40°C to 85°C) and VCC = 2.7 V, the guaranteed minimum is 80 MHz. Performance degrades to 55 MHz at VCC = 1.8 V under same conditions, per TI's SCAS296O datasheet.
Does the SN74LVC374APW support 5-V input signals while operating at 3.3-V VCC?
Yes, the SN74LVC374APW explicitly supports 5.5-V-tolerant inputs across its full VCC range (1.65 V to 3.6 V). This allows direct connection of 5-V microcontrollers or peripherals to its D and CLK inputs without external level-shifting circuitry-verified in the Recommended Operating Conditions and Feature Description sections of the datasheet.
How does the Ioff feature function in the SN74LVC374APW?
The Ioff feature in the SN74LVC374APW disables all outputs and blocks current flow when VCC = 0 V, preventing back-driving from live I/O lines into a powered-down system domain. Measured Ioff leakage is ≤ ±20 μA at VI/VO = 5.5 V, enabling safe live insertion and partial-power-down operation in modular electronics-per JEDEC JESD78 compliance.
What is the recommended bypass capacitor for the SN74LVC374APW VCC pin?
Texas Instruments recommends a 0.1-μF ceramic bypass capacitor placed as close as possible to the VCC pin (Pin 20) of the SN74LVC374APW. For improved high-frequency noise suppression, this may be paralleled with a 1-μF capacitor. The layout guideline emphasizes minimizing trace inductance to maintain stable supply during fast 32-mA output transitions.
Is the SN74LVC374APW pin-compatible with other packages in the SN74LVC374A family?
Yes, the SN74LVC374APW (TSSOP-20) shares identical pin numbering and function mapping with all other SN74LVC374A variants-including SOIC (DW), SSOP (DB), TVSOP (DGV), and PDIP (N) packages-as confirmed in the Pin Configuration and Functions section of the datasheet. Signal routing and PCB footprint differ, but logic-level behavior and timing are fully consistent.
SN74LVC374APW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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:
- 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-TSSOP
SN74LVC374APW FAQ
1.How can I place an order for SN74LVC374APW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC374APW 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 SN74LVC374APW reliable?
The price and inventory of SN74LVC374APW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC374APW is usually 5 days.
3.What payment methods are accepted for SN74LVC374APW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC374APW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC374APW?
SN74LVC374APW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC374APW 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 SN74LVC374APW?
For technical support, including SN74LVC374APW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC374APW requirements.
6.How does Aetrix verify that SN74LVC374APW is sourced from the original manufacturer or authorized distributors?
All SN74LVC374APW 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 SN74LVC374APW meets industry standards.
7.What is the process for return or replacement of SN74LVC374APW?
All SN74LVC374APW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC374APW, 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 SN74LVC374APW part is unused and in its original packaging.
Return procedure for SN74LVC374APW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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