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onsemi MC74LVX574DTR2
- Part No.:
- MC74LVX574DTR2
- Manufacturer:
- onsemi
- Category:
- Flip Flops
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74LVX574DTR2.pdf
- Description:
- IC FF D-TYPE SNGL 8BIT 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
MC74LVX574DTR2 from onsemi is an advanced high-speed CMOS octal D-type flip-flop with 3-state outputs, designed for bus interface and data latching in mixed-voltage systems. It operates from 2.0 V to 3.6 V, tolerates 5.5 V inputs, and delivers 8.5 ns typical propagation delay at 3.3 V - enabling reliable 8-bit synchronous data capture in industrial control backplanes.
For engineers reviewing the MC74LVX574DTR2 datasheet, pinout, applications, or equivalent options, key selection criteria include 3-state output timing (tPZL/tPLZ ≤ 16.3 ns), input voltage tolerance up to 5.5 V, low ICC (4 µA max), latch-up immunity (>100 mA), and TSSOP-20 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements eight edge-triggered D-type latches synchronized to a single clock pulse (CP) input, with independent 3-state control via OE. All latches share identical AC/DC electrical behavior and are fabricated using onsemi's LVX CMOS process for optimized speed-power trade-off.
Its dual-voltage interface capability stems from input structures rated to 5.5 V while operating from a 2.0–3.6 V supply, allowing direct connection between 3.3 V logic domains and legacy 5 V peripherals without level shifters. Output disable timing is tightly specified (tPHZ ≤ 18.5 ns) to prevent bus contention during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 3.6 V - ensures compatibility with 3.3 V embedded systems and supports brown-out resilience down to 2.0 V. |
| tPD (Typ) | 8.5 ns at VCC = 3.3 V, CL = 15 pF - enables ≥80 MHz clock operation in high-throughput data acquisition paths. |
| Input Voltage Tolerance | −0.5 V to +5.5 V - permits safe interfacing with 5 V TTL/CMOS signals without external clamping or translation. |
| ICC (Max) | 4 µA at TA = 25 °C - minimizes quiescent power in always-on industrial monitoring nodes. |
| IOZ (Max) | ±2.5 µA at VCC = 3.6 V - guarantees low leakage in high-impedance bus states, reducing signal integrity risk. |
| tPZH / tPHZ | 15.0 ns / 17.0 ns max at VCC = 3.3 V - defines worst-case enable/disable window for deterministic bus arbitration. |
Pinout & Package
TSSOP-20 (Case 948E) package: 6.5 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, lead-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D0–D7 Data Inputs | Asynchronous parallel data inputs latched on rising CP edge; tolerate 5.5 V regardless of VCC. |
| 9, 10, 11, 12, 13, 14, 15, 16 | O0–O7 3-State Outputs | Octal bidirectional bus drivers; high-impedance when OE = HIGH, driven LOW/HIGH when OE = LOW. |
| 17 | OE | Active-low output enable controlling all eight outputs simultaneously; no internal pull-up/pull-down. |
| 18 | CP | Rising-edge clock input triggering simultaneous latching of D0–D7 into Q0–Q7; minimum pulse width 5.0 ns. |
| 19 | VCC | Positive supply pin (2.0–3.6 V); decoupling capacitor required within 5 mm for noise suppression. |
| 20 | GND | Ground reference for all I/O and internal logic; must be connected to system ground plane with low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| High-Speed Latching | 8.5 ns typical propagation delay enables real-time sampling in 100+ Mbps digital interfaces. |
| Mixed-Voltage Interface | 5.5 V-tolerant inputs allow direct connection to 5 V microcontrollers or sensors without level-shifting circuitry. |
| Low-Power 3-State Control | Sub-µA output leakage (IOZ ≤ ±2.5 µA) maintains bus integrity during extended sleep modes. |
| Latch-Up Immunity | Exceeds 100 mA per JEDEC JESD78 Class II - ensures robustness against transient overvoltage events. |
| Pb-Free & RoHS Compliance | Meets global environmental regulations; qualified for reflow soldering per J-STD-020 MSL Level 1. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Isolating and latching sensor data from multiple analog-to-digital converters before transmission over a shared CAN or LIN bus. IC Role / Device Role / Timing Role: Synchronous 8-bit data register buffering ADC outputs on rising clock edge, with OE-controlled bus release during communication windows. Use Value: Eliminates need for discrete level shifters due to 5.5 V input tolerance, reducing BOM count and board area in space-constrained modules. |
Use Scenario: Managing discrete I/O expansion for door lock actuators, mirror controls, and lighting drivers in centralized body electronics units. IC Role / Device Role / Timing Role: Octal latch providing glitch-free output enable sequencing across multiple peripheral drivers under MCU GPIO control. Use Value: Tight 15.0 ns tPZH specification ensures predictable bus release timing, preventing short-circuit conditions during driver switching. |
| Medical Diagnostic Equipment Data Path | Test & Measurement Instrumentation |
|
Use Scenario: Capturing parallel output from high-resolution imaging sensors prior to serialization and FPGA-based processing. IC Role / Device Role / Timing Role: High-fidelity 8-bit data capture element synchronized to system clock, holding pixel data stable during FIFO loading cycles. Use Value: 1.5 ns output skew (tOSHL/tOSLH) preserves inter-channel timing alignment critical for multi-sensor coherence. |
Use Scenario: Buffering configuration bits from microcontroller to programmable gain amplifiers, DACs, and multiplexers in modular benchtop analyzers. IC Role / Device Role / Timing Role: Low-noise (VOLP ≤ 0.8 V) latching interface ensuring clean digital control signals despite high-frequency analog signal paths nearby. Use Value: Sub-µA quiescent current extends battery life in portable test equipment operating in standby mode for >100 hours. |
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 | Wider VCC range (1.65–3.6 V); lower tPD (6.1 ns typ); higher IOZ (±10 µA). | Better suited for ultra-low-voltage 1.8 V systems; less suitable for 5 V-tolerant designs requiring robust input clamping. | Select SN74LVC574APWR only if VCC ≤ 3.3 V and 5.5 V input tolerance is not required. |
| 74LCX574MTCX | 5 V-tolerant inputs; wider VCC (2.0–3.6 V); higher ICC (10 µA max); same TSSOP-20 footprint. | Higher static power draw limits use in battery-powered applications; identical pinout enables drop-in replacement where layout allows. | Choose 74LCX574MTCX when existing PCB layout matches TSSOP-20 and 5 V tolerance is mandatory but µA-level ICC is not critical. |
Compared with SN74LVC574APWR and 74LCX574MTCX, the MC74LVX574DTR2 uniquely balances 5.5 V input tolerance, sub-µA quiescent current, and 8.5 ns speed - making it optimal for industrial and automotive systems requiring both robust interfacing and low standby power.
Availability
MC74LVX574DTR2 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and medical diagnostic data paths requiring stable component supply across extended product lifecycles.
Supply support for MC74LVX574DTR2 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The MC74LVX574DTR2 belongs to onsemi's LVX logic family, engineered for high-speed, low-power, mixed-voltage interoperability in harsh-environment embedded systems where reliability and long-term supply stability are critical.
FAQ
What is the maximum clock frequency supported by the MC74LVX574DTR2?
The MC74LVX574DTR2 supports a maximum clock frequency of 80 MHz at VCC = 3.3 V with CL = 15 pF, and 75 MHz under full temperature range (−40 °C to +85 °C). This is derived from its 13.2 ns maximum propagation delay (tPHL/tPLH) and 5.0 ns minimum CP pulse width requirement, ensuring reliable setup/hold timing margins in synchronous designs using the MC74LVX574DTR2.
Does the MC74LVX574DTR2 require external pull-up resistors on the OE pin?
No, the MC74LVX574DTR2 OE pin has no internal pull-up or pull-down resistor and must be actively driven to a defined logic level. Leaving OE floating risks indeterminate output states and potential bus contention. For default-high-impedance operation, a 10 kΩ pull-up to VCC is recommended; for default-driven operation, connect OE directly to MCU GPIO or fixed logic rail per system requirements using the MC74LVX574DTR2.
Can the MC74LVX574DTR2 safely interface with 5 V microcontrollers?
Yes, the MC74LVX574DTR2 inputs tolerate up to 5.5 V regardless of VCC (2.0–3.6 V), enabling direct connection to 5 V microcontrollers without level shifters. Its outputs swing rail-to-rail (0 V to VCC), so interfacing with 5 V receivers requires external pull-ups or compatible 3.3 V–tolerant inputs. This dual-voltage capability is a core design feature of the MC74LVX574DTR2.
What is the thermal resistance (θJA) of the MC74LVX574DTR2 in its TSSOP-20 package?
The MC74LVX574DTR2 in TSSOP-20 (Case 948E) has a thermal resistance θJA of 150 °C/W, measured on a standard FR4 board with 76 mm × 114 mm, 2-ounce copper traces and no airflow per JESD51-7. This value informs thermal design margining - for example, at 4 mA output load and 3.3 V supply, power dissipation remains well below the 833 mW limit, keeping junction temperature within safe operating range when using the MC74LVX574DTR2.
Is the MC74LVX574DTR2 pin-compatible with the SOIC-20 version MC74LVX574DWR2G?
No, the MC74LVX574DTR2 (TSSOP-20) and MC74LVX574DWR2G (SOIC-20 WB) share identical logic functionality and pin assignments but differ in physical package dimensions, pitch (0.65 mm vs. 1.27 mm), and thermal characteristics. While schematic symbols and netlists are interchangeable, PCB layout requires separate footprints. The MC74LVX574DTR2 cannot be substituted onto an SOIC-20 land pattern without redesign.
MC74LVX574DTR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LVX
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 75 MHz
- Max Propagation Delay @ V, Max CL:
- 16.7ns @ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
MC74LVX574DTR2 FAQ
1.How can I place an order for MC74LVX574DTR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LVX574DTR2 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 MC74LVX574DTR2 reliable?
The price and inventory of MC74LVX574DTR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LVX574DTR2 is usually 5 days.
3.What payment methods are accepted for MC74LVX574DTR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LVX574DTR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LVX574DTR2?
MC74LVX574DTR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LVX574DTR2 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 MC74LVX574DTR2?
For technical support, including MC74LVX574DTR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LVX574DTR2 requirements.
6.How does Aetrix verify that MC74LVX574DTR2 is sourced from the original manufacturer or authorized distributors?
All MC74LVX574DTR2 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 MC74LVX574DTR2 meets industry standards.
7.What is the process for return or replacement of MC74LVX574DTR2?
All MC74LVX574DTR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74LVX574DTR2, 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 MC74LVX574DTR2 part is unused and in its original packaging.
Return procedure for MC74LVX574DTR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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