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STMicroelectronics 74V1T80STR
- Part No.:
- 74V1T80STR
- Manufacturer:
- STMicroelectronics
- Category:
- Flip Flops
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74V1T80STR.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,761
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Product details
Overview
74V1T80STR from STMicroelectronics is a single positive-edge-triggered D-type flip-flop with inverted output (Q̅), fabricated in sub-micron C2MOS technology for 4.5–5.5 V operation. It delivers 180 MHz max clock frequency (typ.), 8 mA symmetrical output drive (|IOH| = IOL ≥ 8 mA at VCC = 4.5 V), and 1 µA max quiescent ICC at TA = 25°C. Used in high-speed data latching and clock-domain interfacing in portable 5 V systems.
For engineers reviewing the 74V1T80STR datasheet, 74V1T80STR pinout, 74V1T80STR application, or 74V1T80STR equivalent, key selection criteria include edge-triggered timing behavior, input overvoltage tolerance (0–7 V independent of VCC), balanced tPLH/tPHL propagation delays, power-down input protection, and SOT23-5L package compatibility with space-constrained PCB layouts.
Technical Context
This device implements a synchronous D-type latch with inversion on Q output, triggered exclusively on the rising edge of CK. Its internal structure includes ESD-protected inputs, rail-to-rail input voltage acceptance (–0.5 V to +7.0 V), and output stages designed for symmetrical sourcing/sinking capability under 4.5–5.5 V supply.
It supports mixed-voltage interfacing (e.g., 5 V logic driving 3 V systems) due to input overvoltage immunity and TTL-compatible thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V). The 1.0 ns typical setup/hold times (ts = th = 1.0 ns at CL = 50 pF) enable reliable operation in high-frequency digital control paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| fMAX | 180 MHz (typ.) at VCC = 5 V - enables use in high-speed serial data capture up to 180 MSPS |
| tPLH / tPHL | 4.9 / 4.9 ns (typ., CL = 15 pF) - ensures matched rise/fall path delays for jitter-sensitive clock forwarding |
| VCC Range | 4.5 V to 5.5 V - compatible with regulated 5 V rails and tolerant of ±10% supply variation |
| IOH / IOL | –8 mA / +8 mA (min., VCC = 4.5 V) - drives standard TTL loads without external buffering |
| ICC (Quiescent) | 1 µA (max., TA = 25°C) - supports ultra-low-power standby in battery-operated systems |
| Input Voltage Range | –0.5 V to +7.0 V - allows safe interfacing across voltage domains without level shifters |
| ts / th | 4.0 ns / 1.0 ns (max., CL = 50 pF) - defines minimum D-to-CK timing margin for reliable sampling |
Pinout & Package
SOT23-5L package: 5-pin surface-mount, 1.3 mm × 2.9 mm footprint, 1.45 mm height, thermal pad not included. RoHS-compliant, moisture sensitivity level (MSL) 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - D | Data input | Asynchronous data source sampled on CK rising edge; accepts –0.5 V to +7.0 V regardless of VCC |
| 2 - CK | Clock input | Positive-edge-sensitive trigger; VIH ≥ 2 V, VIL ≤ 0.8 V, supports 180 MHz operation |
| 3 - GND | Ground reference | 0 V return path for all internal logic and I/O; must be low-impedance for noise immunity |
| 4 - Q | Inverted output | Complementary logic state of D sampled at prior CK edge; drives TTL/CMOS loads up to 8 mA |
| 5 - VCC | Supply voltage | Primary power rail (4.5–5.5 V); powers internal logic and output buffers; bypassing required |
Key Features
| Feature | Design Value |
|---|---|
| Positive-edge triggering | Ensures deterministic sampling only at clock rising transitions-eliminates metastability risk from asynchronous glitches |
| Input overvoltage tolerance | Accepts 0–7 V on D and CK pins independent of VCC-enables robust 5 V ↔ 3 V interface without external clamps |
| Symmetrical output drive | IOH = IOL = 8 mA (min.)-supports bidirectional signal integrity in bus-hold or wired-OR configurations |
| Power-down input protection | Inputs remain functional and non-latching when VCC = 0 V-prevents back-driving or latch-up during hot-swap events |
| ESD immunity | Human-body-model (HBM) > 2 kV on all pins-reduces need for external TVS in industrial control I/O stages |
Applications
| High-Speed Data Capture | Digital Clock Domain Crossing |
|---|---|
Use Scenario: Capturing parallel sensor data (e.g., ADC output) synchronized to a master system clock. IC Role / Device Role / Timing Role: Edge-triggered D flip-flop latching incoming data on precise clock edges with minimal skew. Use Value: 1.0 ns hold time and 4.9 ns propagation delay ensure reliable sampling at 180 MHz without external timing compensation. | Use Scenario: Transferring status flags between 5 V microcontroller peripherals and 3 V FPGA logic blocks. IC Role / Device Role / Timing Role: Level-shifting and synchronizing control signals across voltage domains using overvoltage-tolerant inputs. Use Value: Input range of –0.5 V to +7.0 V eliminates need for discrete level translators, reducing BOM count and layout area. |
| Portable Power Management Sequencing | TTL-Compatible Logic Interface |
Use Scenario: Enabling/disabling DC-DC converter rails based on system wake-up events in handheld devices. IC Role / Device Role / Timing Role: Glitch-free state retention element controlling enable lines with precise edge alignment. Use Value: 1 µA max ICC at 25°C extends battery life during sleep mode while maintaining fast wake-up response. | Use Scenario: Interfacing legacy 5 V TTL logic (e.g., 74LS series) with modern CMOS controllers. IC Role / Device Role / Timing Role: Output buffer providing TTL-compatible VOH/VOL levels and current drive. Use Value: VOH ≥ 3.94 V at IOL = 8 mA and VOL ≤ 0.36 V meet 74LS input thresholds without pull-ups or resistors. |
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 |
|---|---|---|---|
| SN74LVC1G74DCKR | Single D-type with true/non-inverted Q outputs; 1.65–5.5 V supply; lower drive (24 mA), higher speed (tPD = 3.5 ns typ.) | Requires external inverter for Q̅ functionality; better suited for 1.8 V/3.3 V systems | Select when dual-output (Q/Q̅) or wider VCC range is needed; verify Q̅ generation method |
| 74AUP1G74GW,125 | Ultra-low-power variant (ICC = 0.9 µA typ.); 0.8–3.6 V operation; tPD = 6.4 ns (VCC = 3.3 V) | Not rated for 5 V operation; lacks 0–7 V input tolerance | Prefer for sub-3.6 V battery-powered designs where 5 V compatibility is unnecessary |
Compared with SN74LVC1G74DCKR and 74AUP1G74GW,125, the 74V1T80STR uniquely combines 5 V operation, input overvoltage tolerance, and inverted-only output in SOT23-5L-making it optimal for legacy 5 V systems requiring robust, compact edge-triggered storage without level translation.
Availability
74V1T80STR is available at Aetrix Electronics and suitable for high-speed data capture, digital clock domain crossing, portable power management sequencing, and TTL-compatible logic interface applications requiring stable component supply and long-term obsolescence mitigation.
Supply support for 74V1T80STR 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, Switzerland, specializing in automotive, industrial, and power management ICs, with broad analog, digital, and mixed-signal product portfolios.
The 74V series targets high-speed, low-power CMOS logic for portable and industrial applications, emphasizing robustness, wide supply tolerance, and compatibility with legacy TTL systems.
FAQ
Is the 74V1T80STR pin-compatible with other SOT23-5 D-type flip-flops?
No-pinout differs from common variants like SN74LVC1G74 (which places VCC on pin 5 but GND on pin 2). The 74V1T80STR uses pin 3 for GND and pin 5 for VCC, matching ST's proprietary SOT23-5L assignment. Layout reuse requires verification against mechanical drawings and netlist mapping.
Does the 74V1T80STR support 3.3 V operation?
No-it is specified only for 4.5–5.5 V operation per recommended conditions. While absolute maximum ratings allow VCC down to –0.5 V, functional operation below 4.5 V is not guaranteed. For 3.3 V systems, consider SN74LVC1G74 or 74AUP1G74 instead.
What is the purpose of the "power down protection" feature?
Power down protection allows D and CK inputs to accept valid logic levels (0–7 V) even when VCC = 0 V, preventing back-current flow, latch-up, or damage during hot-insertion or partial-power-down scenarios. This is implemented via integrated diode clamps and isolation structures in the input buffer.
Can the 74V1T80STR drive a 50 pF load at 180 MHz?
Yes-the AC specs confirm tPLH/tPHL = 5.9 ns (max) and fMAX = 150 MHz (min) at CL = 50 pF, supporting reliable 180 MHz operation with appropriate board-level impedance control and short trace routing to minimize parasitic loading beyond the specified 50 pF test condition.
74V1T80STR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74V
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Clock Frequency:
- 180 MHz
- Max Propagation Delay @ V, Max CL:
- 12ns @ 5V, 50pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 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-23-5
74V1T80STR FAQ
1.How can I place an order for 74V1T80STR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74V1T80STR 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 74V1T80STR reliable?
The price and inventory of 74V1T80STR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74V1T80STR is usually 5 days.
3.What payment methods are accepted for 74V1T80STR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74V1T80STR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74V1T80STR?
74V1T80STR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74V1T80STR 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 74V1T80STR?
For technical support, including 74V1T80STR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74V1T80STR requirements.
6.How does Aetrix verify that 74V1T80STR is sourced from the original manufacturer or authorized distributors?
All 74V1T80STR 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 74V1T80STR meets industry standards.
7.What is the process for return or replacement of 74V1T80STR?
All 74V1T80STR units undergo pre-shipment inspection (PSI). If there is an issue with 74V1T80STR, 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 74V1T80STR part is unused and in its original packaging.
Return procedure for 74V1T80STR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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