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STMicroelectronics 74LVX374MTR
- Part No.:
- 74LVX374MTR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVX374MTR.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,999
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Product details
Overview
74LVX374MTR from STMicroelectronics is a low-voltage CMOS octal D-type flip-flop with 3-state non-inverting outputs, 5V-tolerant inputs, 2V–3.6V operating range, 160MHz max clock frequency (typ. at VCC = 3.3V), and symmetrical 4mA output drive. It serves as a data latch and bus interface in 3.3V digital systems requiring level translation between 5V peripherals and 3.3V logic.
For engineers reviewing the 74LVX374MTR datasheet, 74LVX374MTR pinout, 74LVX374MTR application, or 74LVX374MTR equivalent, key selection criteria include 5V input tolerance, 3-state output control timing (tPZL/tPHZ ≤ 15.5ns), low ICC (4µA max), high noise immunity (VOLP = 0.3V typ.), and SO-20 package compatibility with legacy 74-series layouts.
Technical Context
This device implements eight edge-triggered D-type latches synchronized to the rising edge of CK, with independent 3-state control via active-low OE. Internal operation continues regardless of OE state-data can be latched or retained while outputs are high-impedance.
Input protection enables safe 0–7V signal acceptance independent of VCC, supporting robust 5V-to-3.3V interfacing. Sub-micron C2MOS fabrication ensures balanced tPLH ≅ tPHL propagation delays and 2kV ESD immunity on all pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0V to 3.6V - Enables direct use in 3.3V systems with 10% supply margin; retains data down to 1.2V. |
| fMAX | 160MHz (typ. at VCC = 3.3V) - Supports high-speed data capture in burst-mode interfaces and synchronous FIFOs. |
| 5V Tolerance | Inputs accept 0–5.5V regardless of VCC - Eliminates external level shifters when connecting to 5V microcontrollers or legacy peripherals. |
| Output Drive | |IOH| = IOL = 4mA (min. at VCC = 3V) - Drives standard CMOS loads across full temperature range without external buffers. |
| ICC Quiescent | 4µA (max. at TA = 25°C) - Enables battery-powered operation with negligible standby current draw. |
| VOLP | 0.3V (typ. at VCC = 3.3V, CL = 50pF) - Reduces ground bounce and crosstalk in dense PCB layouts with multiple switching outputs. |
Pinout & Package
74LVX374MTR is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package per mechanical drawing PO13L, with 1.27mm pitch, 12.6–13.0mm body length, and 10.0–10.65mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE | Active-low 3-state output enable - Controls all eight Q outputs simultaneously; high = high-Z, low = functional. |
| 2,5,6,9,12,15,16,19 | Q0–Q7 | Non-inverting 3-state outputs - Reflect latched D-input states when OE is low; tri-stated when OE is high. |
| 3,4,7,8,13,14,17,18 | D0–D7 | Data inputs - Sampled on rising edge of CK; tolerate 0–5.5V regardless of VCC. |
| 11 | CK | Positive-edge clock - Synchronizes latching of all eight D inputs to Q outputs; minimum pulse width 5.5ns at 3.3V. |
| 10 | GND | Ground reference - Shared return path for all signals and power; requires low-inductance connection to minimize noise. |
| 20 | VCC | Positive supply - Powers internal logic and output drivers; decoupling capacitor (100nF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Accepts 0–5.5V input signals with no external components, enabling direct interfacing to 5V controllers and sensors. |
| Power-down input protection | Withstands 0–7V on any input pin regardless of VCC state - prevents damage during hot insertion or supply sequencing. |
| Symmetrical output impedance | Matched |IOH| and IOL (≥4mA) ensures consistent rise/fall times and reduces signal distortion on shared buses. |
| Low dynamic noise | VOLP = 0.3V (typ.) minimizes simultaneous switching output (SSO) noise in multi-bit parallel interfaces. |
Applications
| Industrial PLC I/O Expansion | 3.3V Microcontroller Bus Interface |
|---|---|
Use Scenario: Expanding GPIO count of a 3.3V ARM Cortex-M controller to drive 8-channel relay modules and status LEDs. IC Role / Device Role / Timing Role: Octal latch buffering MCU parallel port outputs; OE tied low for continuous drive, CK synchronized to software write strobe. Use Value: Eliminates need for discrete level shifters due to 5V-tolerant inputs, while 4mA drive directly sinks LED currents without external transistors. | Use Scenario: Interfacing a 5V legacy UART peripheral to a 3.3V FPGA-based communication module. IC Role / Device Role / Timing Role: Bidirectional data latch isolating voltage domains; OE controlled by FPGA to gate data flow direction on shared bus lines. Use Value: 5V-tolerant D and Q pins allow safe connection to 5V UART TX/RX, while 3.3V-compatible CK and OE simplify FPGA pin assignment. |
| Memory Address Latching | Test Equipment Digital Pattern Generator |
Use Scenario: Capturing and holding 8-bit address bits from a microprocessor during memory read/write cycles. IC Role / Device Role / Timing Role: Edge-triggered address register; CK driven by processor ALE signal, OE held low for stable bus drive during access window. Use Value: Balanced tPLH/tPHL (≤13.5ns at 3.3V) ensures minimal address skew across all 8 bits, preserving setup/hold timing margins. | Use Scenario: Generating precise 8-bit stimulus patterns for IC functional testing at up to 100MHz. IC Role / Device Role / Timing Role: High-speed pattern register; CK driven by programmable clock source, OE toggled to insert known-Z states for bus contention tests. Use Value: 160MHz fMAX and 5.5ns min. CK pulse width support pattern rates exceeding 80MHz, while VOLP ≤ 0.3V maintains signal integrity under heavy capacitive loading. |
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 |
|---|---|---|---|
| SN74LVC374APWR | Same 3.3V VCC range and 3-state outputs, but only 5V-tolerant on inputs (not 0–7V), and lower ESD rating (1.5kV vs. 2kV). | Lacks full power-down input protection; unsuitable for hot-swap or uncontrolled supply sequencing environments. | Prefer when cost sensitivity outweighs robustness requirements and 5V tolerance suffices. |
| 74ALVC374MTCX | Higher speed (fMAX = 175MHz), but narrower VCC range (2.3–3.6V) and no 1.2V data retention capability. | Cannot retain state during brown-out conditions below 2.3V; less suitable for battery-backed systems with wide supply variation. | Choose for maximum throughput in stable 3.3V rails where extended low-VCC operation is unnecessary. |
Compared with SN74LVC374APWR and 74ALVC374MTCX, the 74LVX374MTR offers superior input ruggedness (0–7V tolerance), broader supply retention (down to 1.2V), and higher ESD immunity-making it optimal for industrial field equipment and mixed-voltage embedded systems demanding long-term reliability.
Availability
74LVX374MTR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, 3.3V microcontroller bus interface, and memory address latching requiring stable component supply and long-lifecycle support.
Supply support for 74LVX374MTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The 74LVX series targets low-voltage, low-power 3.3V logic applications with 5V-tolerant interfaces, emphasizing robustness, noise immunity, and compatibility with legacy TTL/CMOS systems.
FAQ
Can 74LVX374MTR operate with VCC = 2.5V?
Yes. The device is fully specified from 2.0V to 3.6V, including guaranteed VIH/VIL thresholds, output drive, and propagation delays at 2.5V. At this voltage, fMAX drops to ~95MHz (typ.), and VOL rises to ≤0.44V at 4mA load-still sufficient for most 2.5V logic families.
What happens to internal flip-flop state when OE is high?
The internal latches retain their last stored values regardless of OE state. New data can still be clocked in via CK while outputs are high-impedance, allowing seamless handover between bus arbitration phases without data loss or reinitialization.
Is decoupling required on VCC and GND pins?
Yes. A 100nF ceramic capacitor must be placed as close as possible to pins 20 (VCC) and 10 (GND) to suppress high-frequency supply noise generated during output switching. Failure to do so increases VOLP and may cause timing violations in adjacent channels.
Does 74LVX374MTR support hot-plug operation?
Yes. Its 0–7V input tolerance and power-down protection allow safe connection/disconnection while VCC is powered or unpowered. Inputs remain undamaged even if driven before VCC stabilizes, making it suitable for modular backplane and field-replaceable unit designs.
74LVX374MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74LVX
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 95 MHz
- Max Propagation Delay @ V, Max CL:
- 14.1ns @ 3.3V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Quiescent (Iq):
- 4 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LVX374MTR FAQ
1.How can I place an order for 74LVX374MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVX374MTR 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 74LVX374MTR reliable?
The price and inventory of 74LVX374MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVX374MTR is usually 5 days.
3.What payment methods are accepted for 74LVX374MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVX374MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVX374MTR?
74LVX374MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVX374MTR 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 74LVX374MTR?
For technical support, including 74LVX374MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVX374MTR requirements.
6.How does Aetrix verify that 74LVX374MTR is sourced from the original manufacturer or authorized distributors?
All 74LVX374MTR 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 74LVX374MTR meets industry standards.
7.What is the process for return or replacement of 74LVX374MTR?
All 74LVX374MTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVX374MTR, 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 74LVX374MTR part is unused and in its original packaging.
Return procedure for 74LVX374MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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