My Inquiry
My Account
Texas Instruments SN74LV374APW
- Part No.:
- SN74LV374APW
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LV374APW.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,201
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LV374APW from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for 2 V to 5.5 V operation. It provides 8-bit data latching synchronized to the rising edge of CLK, features Ioff partial-power-down support, and delivers ≤9.5 ns propagation delay at 5 V - enabling reliable bus buffering in industrial I/O modules and programmable logic controllers.
For engineers reviewing the SN74LV374APW datasheet, SN74LV374APW pinout, SN74LV374APW application, or SN74LV374APW equivalent, this page delivers verified functional identity, TSSOP-20 package mapping, confirmed timing parameters (tpd, tsu, th), 3-state output behavior, and validated alternative options for industrial control and analog input module designs.
Technical Context
The SN74LV374APW implements eight independent D-type latches, each triggered on the positive clock edge, with a shared output-enable (OE) control that places all Q outputs simultaneously into high-impedance state. Its Ioff circuitry prevents backflow current during power sequencing, and mixed-mode voltage operation allows inputs to tolerate up to 5.5 V regardless of VCC level.
Designed for capacitive bus driving, it uses low-drive CMOS output stages to minimize ringing and ground bounce (VOLP < 0.8 V at 3.3 V), while maintaining full logic-level compatibility across 2 V–5.5 V supply range. The device operates from –40°C to +125°C and meets JESD17 latch-up requirements (>250 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports mixed-voltage system interfacing and single-supply operation across 3.3 V and 5 V domains. |
| tpd (max) | 9.5 ns at VCC = 5 V, CL = 15 pF - enables ≥110 MHz operation in high-speed digital control loops. |
| tsu / th | 3 ns setup / 2 ns hold at 5 V - defines minimum data stability window before and after CLK↑ for reliable capture. |
| Ioff Current | ≤5 µA at 0–5.5 V - ensures safe isolation during partial power-down without external blocking components. |
| Output Drive | ±16 mA per output at 5 V - sufficient for driving 50 pF loads with controlled edge rates to suppress overshoot. |
| Operating Temp | –40°C to +125°C - qualified for under-hood, rail, and industrial automation environments. |
| VOLP / VOHV | <0.8 V / >2.3 V at 3.3 V - quantifies noise margin preservation during simultaneous switching of multiple outputs. |
Pinout & Package
TSSOP-20 (PW) package: 6.50 mm × 4.40 mm body, 0.65 mm lead pitch, surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable input | Active-low control: drives all Q outputs to high-Z when low; no effect on internal latch state. |
| 2–9, 12, 15–19 (Q1–Q8) | Tri-state output terminals | Reflect D-input state on CLK↑ when OE is high; present high-impedance when OE is low. |
| 3–4, 7–8, 13–14, 17–18 (D1–D8) | Data input terminals | Sampled on rising CLK edge; overvoltage tolerant up to 5.5 V independent of VCC. |
| 11 (CLK) | Clock input | Positive-edge-triggered; requires minimum pulse width of 5 ns at 5 V for reliable register update. |
| 10 (GND) | Ground reference | Primary return path for all I/O and internal logic; must be low-impedance for noise control. |
| 20 (VCC) | Power supply | Supplies core logic and output drivers; decoupling required within 10 mm of pin per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage operation | Inputs accept 0–5.5 V signals while VCC operates from 2–5.5 V - eliminates level shifters in multi-rail systems. |
| Ioff partial-power-down support | Prevents damaging current flow between powered and unpowered sections - critical for hot-swap and modular backplanes. |
| Low ground bounce (VOLP) | <0.8 V at 3.3 V - maintains signal integrity on non-switching outputs during aggressive bus transitions. |
| 3-state bus interface capability | Enables direct connection to shared data buses without external pull-ups or isolation logic - reduces BOM count. |
| Latch-up immunity | >250 mA per JESD17 - ensures robustness against transient overcurrent events in industrial EMI environments. |
Applications
| Programmable Logic Controller (PLC) | DCS and PAC: Analog Input Module |
|---|---|
Use Scenario: Latching sensor data from 8-channel ADCs before serial readout by microcontroller. IC Role / Device Role / Timing Role: Edge-triggered register holding parallel conversion results; synchronized to system clock edge. Use Value: Eliminates metastability risk during asynchronous sampling and enables deterministic data capture timing. |
Use Scenario: Isolating and buffering analog front-end multiplexer outputs to prevent loading effects. IC Role / Device Role / Timing Role: 3-state buffer isolating sensitive analog signal paths from noisy digital backplane. Use Value: Prevents cross-talk and offset drift caused by bus capacitance and switching noise. |
| Trains, Trams, and Subway Carriages | AC Inverter Drives |
Use Scenario: Capturing door status, brake signals, and HVAC sensor inputs across distributed CAN nodes. IC Role / Device Role / Timing Role: Input conditioner and level translator interfacing 24 V field sensors to 3.3 V controller logic. Use Value: Overvoltage-tolerant inputs withstand transients common in rail traction power environments. |
Use Scenario: Synchronizing gate driver enable signals across multiple IGBT half-bridges in motor control PCBs. IC Role / Device Role / Timing Role: Skew-controlled distribution of PWM enable commands with matched propagation delay. Use Value: Reduces phase mismatch between parallel inverter legs, improving torque ripple and thermal balance. |
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 |
|---|---|---|---|
| SN74LVC374APW | Lower VCC range (1.65–3.6 V); faster tpd (6.7 ns at 3.3 V); no Ioff support. | Not suitable for 5 V systems or partial-power-down architectures; optimized for low-voltage portable gear. | Select only if operating exclusively at 3.3 V and requiring tighter timing margins without power sequencing constraints. |
| 74ACT374SCX | Higher drive (±24 mA); 5 V-only operation; TTL-compatible inputs; no Ioff or mixed-voltage support. | Requires level translation when interfacing with 3.3 V logic; unsuitable for hot-swap or multi-rail designs. | Choose for legacy 5 V systems where maximum speed and drive strength outweigh power flexibility needs. |
Compared with SN74LV374APW, SN74LVC374APW trades 5 V compatibility and Ioff for lower latency in 3.3 V domains, while 74ACT374SCX sacrifices voltage flexibility and power-down safety for raw speed and drive in fixed 5 V infrastructure.
Availability
SN74LV374APW is available at Aetrix Electronics and suitable for industrial automation, rail transportation control, and AC motor drive applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LV374APW 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 industrial-grade logic and interface solutions.
The SN74LV374A product line targets robust, wide-voltage bus interface and data latching in harsh environments - specifically engineered for programmable controllers, distributed I/O systems, and motion control subsystems.
FAQ
What is the maximum clock frequency supported by the SN74LV374APW?
The SN74LV374APW supports up to 110 MHz maximum clock frequency at VCC = 5 V with CL = 15 pF load, as specified in the switching characteristics table. At 3.3 V and same load, fmax is 70 MHz. These values assume proper layout, decoupling, and signal integrity controls - actual system-level frequency may be limited by board parasitics and timing margins.
Does the SN74LV374APW support partial power-down via Ioff?
Yes, the SN74LV374APW includes Ioff circuitry that disables outputs when VCC = 0 V, limiting off-state current to ≤5 µA even with input/output voltages present from 0 to 5.5 V. This feature protects downstream circuitry during power sequencing and enables safe hot-plug operation in modular industrial systems.
Can the SN74LV374APW inputs tolerate 5 V when operating at 3.3 V VCC?
Yes, the SN74LV374APW inputs are overvoltage tolerant up to 5.5 V regardless of VCC level - allowing direct interfacing with 5 V logic or sensors while powered from 3.3 V. This eliminates external level-shifting components and simplifies mixed-voltage system design.
What is the purpose of the OE pin on the SN74LV374APW?
The OE (output enable) pin on the SN74LV374APW is an active-low control that places all eight Q outputs simultaneously into high-impedance state when asserted. It does not affect internal latch operation - data continues to be captured on CLK↑ even while outputs are disabled, enabling seamless bus arbitration and multi-master communication.
Is the SN74LV374APW pin-compatible with other TSSOP-20 octal flip-flops?
No - the SN74LV374APW has a specific pinout defined in TI's SCLS408L datasheet (e.g., OE on Pin 1, CLK on Pin 11, GND on Pin 10). While other TSSOP-20 octal D-flip-flops share the same package footprint, pin assignments differ across families (e.g., 74ACT374, 74LVC374), so direct substitution requires PCB layout verification.
SN74LV374APW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74LV374APW FAQ
1.How can I place an order for SN74LV374APW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV374APW 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 SN74LV374APW reliable?
The price and inventory of SN74LV374APW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV374APW is usually 5 days.
3.What payment methods are accepted for SN74LV374APW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV374APW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV374APW?
SN74LV374APW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV374APW 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 SN74LV374APW?
For technical support, including SN74LV374APW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV374APW requirements.
6.How does Aetrix verify that SN74LV374APW is sourced from the original manufacturer or authorized distributors?
All SN74LV374APW 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 SN74LV374APW meets industry standards.
7.What is the process for return or replacement of SN74LV374APW?
All SN74LV374APW units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV374APW, 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 SN74LV374APW part is unused and in its original packaging.
Return procedure for SN74LV374APW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LV374APW Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
