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STMicroelectronics 74V1G79CTR
- Part No.:
- 74V1G79CTR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74V1G79CTR.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT SOT323-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,470
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Product details
Overview
74V1G79CTR from STMicroelectronics is a single positive-edge-triggered D-type flip-flop in SOT323-5L package, operating from 2V to 5.5V supply, with 180MHz max clock frequency at 5V, 8mA symmetrical output drive, and 1µA quiescent current at 25°C - used for data synchronization and clock-domain interfacing in portable 3.3V/5V mixed-voltage systems.
For engineers reviewing the 74V1G79CTR datasheet, 74V1G79CTR pinout, 74V1G79CTR application, or 74V1G79CTR equivalent, key selection criteria include edge-triggered timing behavior, input overvoltage tolerance (0–7V), latch-up immunity, ESD-protected I/O, and sub-10ns propagation delay across temperature ranges.
Technical Context
This device implements a synchronous D-type storage element triggered exclusively on the rising edge of CK, with no internal reset/set control. Its C2MOS process enables rail-to-rail input voltage acceptance (–0.5V to VCC+0.5V) independent of supply, and power-down protection ensures safe operation during VCC=0 conditions.
Propagation delays are balanced (tPLH ≅ tPHL), and setup/hold times are specified down to 1ns at 5V - enabling reliable operation in high-speed digital interfaces. The flip-flop maintains functional integrity across –55°C to +125°C, with guaranteed DC output levels at ±8mA load and VIH/VIL thresholds defined as 0.7VCC/0.3VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 5.5V - supports dual-supply 3.3V and legacy 5V logic domains |
| fMAX | 180MHz (typ.) at VCC = 5V - enables high-speed data capture in serial interface clocking |
| tPLH / tPHL | 3.9ns / 3.9ns (typ., CL=15pF, VCC=5V) - ensures matched rise/fall path timing for jitter-sensitive sampling |
| IOH / IOL | –8mA / +8mA (min., VCC=4.5V) - drives standard CMOS loads without external buffering |
| ICC (Quiescent) | 1µA (max., TA=25°C) - minimizes standby power in battery-operated portable devices |
| VI Input Range | –0.5V to +7.0V - allows safe interfacing between 5V and 3V systems without level shifters |
| ESD Protection | HBM ≥2kV - built-in protection eliminates need for external transient suppressors |
Pinout & Package
SOT323-5L: ultra-small surface-mount package (1.80 × 2.40 mm, 0.30 mm height), 5-terminal leadframe with gull-wing leads, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - D | Data Input | Asynchronous data source sampled only on CK rising edge; accepts –0.5V to +7V regardless of VCC |
| 2 - CK | Clock Input | Positive-edge-sensitive trigger; 3ns input rise/fall time supported; immune to slow edges via Schmitt-trigger-like noise margin |
| 3 - GND | Ground Reference | 0V return path for all internal logic and I/O; tied to substrate for ESD discharge routing |
| 4 - Q | Output | True output of stored D value; rail-to-rail swing with ±8mA drive capability into capacitive loads ≤50pF |
| 5 - VCC | Supply Voltage | Primary power rail; powers internal logic and output stage; decoupling required within 3mm per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Single Positive-Edge D Flip-Flop | Exact 1-bit synchronous storage with no asynchronous controls - simplifies timing analysis in pipeline stages |
| Input Overvoltage Tolerance | 0–7V input range independent of VCC - enables direct connection to higher-voltage buses without external clamping |
| Balanced Propagation Delays | tPLH ≅ tPHL (≤0.5ns mismatch at 5V) - reduces duty-cycle distortion in clock forwarding applications |
| Power-Down Input Protection | Inputs remain high-impedance and non-latching when VCC = 0 - prevents back-powering and signal contention |
| Enhanced Latch-Up Immunity | Specified to survive >200mA transient injection - meets stringent industrial system reliability requirements |
Applications
| USB 2.0 Transceiver Interface | Industrial Sensor Data Capture |
|---|---|
Use Scenario: Synchronizing asynchronous sensor interrupts to a 48MHz USB frame clock. IC Role / Device Role / Timing Role: Edge-triggered metastability filter between noisy GPIO and USB controller clock domain. Use Value: 1ns hold time and 3ns setup enable clean sampling at 48MHz without external synchronizer chains. | Use Scenario: Capturing pulse-width modulated signals from motor current sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Single-bit data register aligning analog-to-digital event flags to deterministic scan cycles. Use Value: 180MHz fMAX and –55°C to +125°C rating ensure timing compliance across extended industrial temperature ranges. |
| Portable Display Serial Interface | Automotive Body Control Unit |
Use Scenario: Level-shifting and retiming MIPI D-PHY control signals between 1.8V display driver and 3.3V host SoC. IC Role / Device Role / Timing Role: Voltage-tolerant DFF bridging disparate supply domains while preserving edge alignment. Use Value: 0–7V input range and 2V–5.5V VCC support eliminate discrete level translators in compact display flex assemblies. | Use Scenario: Debouncing and synchronizing door-lock switch inputs in 12V-powered BCMs using 5V logic rails. IC Role / Device Role / Timing Role: Input conditioner converting mechanical bounce into clean, clock-aligned status bits. Use Value: Built-in ESD protection (≥2kV HBM) and latch-up immunity reduce need for external TVS diodes in cost-sensitive automotive modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar D-type flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G79DBVR | Lower VCC range (1.65–5.5V); 10ns max tPD at 3.3V; no 0–7V input tolerance | Optimized for low-voltage portable logic; lacks overvoltage robustness for mixed-rail interconnect | Select when strict 1.65V operation or TI ecosystem compatibility is required |
| NC7SZ79P5X | Higher ICC (10µA typ.); 125°C max temp; same SOT323-5L footprint but different pinout (Q on Pin 5, VCC on Pin 1) | Pinout incompatible; requires PCB redesign; better suited for space-constrained consumer wearables | Choose only if board revision permits pin reassignment and 125°C ambient is mandatory |
Compared with SN74LVC1G79DBVR and NC7SZ79P5X, the 74V1G79CTR uniquely combines 0–7V input tolerance, 1µA quiescent current, and guaranteed operation down to –55°C - making it optimal for ruggedized, multi-voltage, low-power embedded control nodes.
Availability
74V1G79CTR is available at Aetrix Electronics and suitable for USB transceiver interfaces, industrial sensor data capture, portable display serial links, and automotive body control units requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74V1G79CTR 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 microcontrollers, power ICs, analog chips, and discrete components for industrial, automotive, and consumer markets.
The 74V series targets high-speed, low-power, mixed-voltage logic applications - specifically engineered for portable, battery-powered, and harsh-environment systems where voltage tolerance and ESD robustness are critical.
FAQ
Is the 74V1G79CTR pin-compatible with standard 74-series SOT323-5L D flip-flops?
No - while it shares the SOT323-5L package, its pinout (D=1, CK=2, GND=3, Q=4, VCC=5) differs from common variants like NC7SZ79 (Q=5, VCC=1). Layout reuse requires verification against the exact mechanical drawing and terminal mapping in ST's DS7049676C.
Can the 74V1G79CTR safely interface a 5V microcontroller GPIO to a 3.3V FPGA clock input?
Yes - its inputs tolerate 0–7V regardless of VCC, and its output swings rail-to-rail. With VCC = 3.3V, Q delivers valid 3.3V logic levels, and D/CK accept 5V signals directly without clamping or level shifting.
What is the minimum recommended bypass capacitance for stable operation at 180MHz?
A 100nF X7R ceramic capacitor placed within 3mm of the VCC and GND pins is specified in ST's layout guidelines. For 180MHz operation, add a parallel 1nF capacitor to suppress high-frequency supply noise above 100MHz.
Does the 74V1G79CTR include an asynchronous reset or preset function?
No - it is a basic single D-type flip-flop with only D, CK, Q, VCC, and GND terminals. No asynchronous control inputs (e.g., CLR, PRE) are provided; state initialization must be handled externally via clocked D input sequencing.
74V1G79CTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74V
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Clock Frequency:
- 180 MHz
- Max Propagation Delay @ V, Max CL:
- 6.5ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Iq):
- 1 µA
- Input Capacitance:
- 4 pF
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323-5
74V1G79CTR FAQ
1.How can I place an order for 74V1G79CTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74V1G79CTR 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 74V1G79CTR reliable?
The price and inventory of 74V1G79CTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74V1G79CTR is usually 5 days.
3.What payment methods are accepted for 74V1G79CTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74V1G79CTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74V1G79CTR?
74V1G79CTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74V1G79CTR 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 74V1G79CTR?
For technical support, including 74V1G79CTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74V1G79CTR requirements.
6.How does Aetrix verify that 74V1G79CTR is sourced from the original manufacturer or authorized distributors?
All 74V1G79CTR 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 74V1G79CTR meets industry standards.
7.What is the process for return or replacement of 74V1G79CTR?
All 74V1G79CTR units undergo pre-shipment inspection (PSI). If there is an issue with 74V1G79CTR, 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 74V1G79CTR part is unused and in its original packaging.
Return procedure for 74V1G79CTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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