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Texas Instruments SN74AUP1G74DCUR
- Part No.:
- SN74AUP1G74DCUR
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74AUP1G74DCUR.pdf
- Description:
- IC FF D-TYPE SNGL 1BIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:18,214
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Product details
Overview
SN74AUP1G74DCUR from Texas Instruments is a single positive-edge-triggered D-type flip-flop with asynchronous active-low clear (CLR) and preset (PRE), operating across 0.8 V to 3.6 V supply range, delivering 5 ns max propagation delay at 3.3 V, 0.9 μA max ICC, and 5.5 pF typical Cpd - used in low-power I/O expansion and power-button debouncing circuits.
For engineers reviewing the SN74AUP1G74DCUR datasheet, SN74AUP1G74DCUR pinout, SN74AUP1G74DCUR application, or SN74AUP1G74DCUR equivalent, key selection factors include its ultra-low static/dynamic power, Schmitt-trigger input noise immunity, Ioff partial-power-down support, and guaranteed timing performance down to 0.8 V supply.
Technical Context
This device implements a synchronous edge-triggered storage element with priority-encoded asynchronous control: CLR overrides PRE when both are asserted low, and outputs retain state during clock quiescence. Its AUP-family architecture uses optimized CMOS process for sub-1-μA static current across full VCC range.
Functional behavior is defined by voltage-level clock triggering (not edge-rate dependent), setup/hold times as low as 0.5 ns at 3.3 V, and output drive capability of ±4 mA at 3 V - enabling reliable point-to-point signal latching in battery-powered and mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 3.6 V - supports direct interfacing with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| tpd Max | 5 ns at 3.3 V - enables reliable operation up to 90 MHz clock frequency in point-to-point configurations. |
| ICC Max | 0.9 μA at TA = –40°C to +85°C - ensures multi-year battery life in always-on sensor or control nodes. |
| Cpd | 5.5 pF typical - minimizes dynamic switching power, critical for high-frequency, low-energy applications. |
| Ioff Support | Yes - prevents back-current flow during partial power-down, protecting powered-down subsystems. |
| Input Hysteresis | 250 mV typical at 3.3 V - rejects >100 mV of noise on slow-rising push-button or long-trace inputs. |
| ESD Rating | ±2000 V HBM - meets industrial IEC 61000-4-2 system-level robustness requirements. |
Pinout & Package
SN74AUP1G74DCUR is housed in an 8-pin VSSOP package (2.30 mm × 2.00 mm body size), optimized for space-constrained PCB layouts while maintaining standard surface-mount assembly compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CLK | Clock input | Positive-edge-triggered control signal; Schmitt-triggered for noise immunity on slow transitions. |
| 2 - D | Data input | Synchronous data source sampled on CLK↑; must meet tsu/th timing relative to clock edge. |
| 3 - Q | Non-inverted output | True-state latch output; drives loads up to ±4 mA at 3 V with rail-to-rail swing. |
| 4 - GND | Ground reference | Primary return path for all internal logic and I/O; requires low-inductance connection to system ground plane. |
| 5 - Q̅ | Inverted output | Complementary latch output; enables differential signaling or reset/set feedback without external inverters. |
| 6 - CLR | Asynchronous clear | Active-low override: forces Q = L, Q̅ = H regardless of CLK or D; priority over PRE when both low. |
| 7 - PRE | Asynchronous preset | Active-low override: forces Q = H, Q̅ = L; overridden by CLR if both asserted. |
| 8 - VCC | Power supply | Single supply input; requires local 0.1 μF bypass capacitor placed within 2 mm of pin for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low static power | 0.9 μA max ICC enables always-on functionality in energy-harvesting and coin-cell systems. |
| Schmitt-trigger inputs | 250 mV typical hysteresis at 3.3 V eliminates false triggering from noisy or slow-rising signals like mechanical switches. |
| Ioff partial-power-down | Prevents current backflow when VCC = 0 V, allowing safe hot-insertion into live backplanes or mixed-supply systems. |
| 3.6-V tolerant I/O | Inputs accept up to 4.6 V regardless of VCC setting - simplifies interface with higher-voltage peripherals without external clamping. |
| Wide VCC scalability | Guaranteed operation from 0.8 V (ultra-low-power microcontrollers) to 3.6 V (legacy 3.3 V systems) with no configuration change. |
Applications
| LED Display Row Drivers | Low-Power MCU I/O Expansion |
|---|---|
Use Scenario: Driving multiplexed LED matrix rows where precise timing and low standby current are essential. IC Role / Device Role / Timing Role: Synchronizes row enable signals with display controller clock; stores row-select state between refresh cycles. Use Value: 0.9 μA max ICC extends battery runtime in portable displays; 5 ns tpd ensures accurate row blanking timing at 120 Hz refresh. |
Use Scenario: Expanding GPIO count on resource-constrained microcontrollers (e.g., MSP430, nRF52) for sensor polling or button scanning. IC Role / Device Role / Timing Role: Latches parallel sensor status or debounces mechanical inputs before MCU readback. Use Value: Schmitt-trigger inputs eliminate external RC filters; Ioff prevents leakage when MCU enters deep-sleep mode. |
| Telecom Line Card Status Latching | Industrial Power-Button Debouncing |
Use Scenario: Capturing fault or alarm signals from line cards in modular telecom chassis with hot-swap capability. IC Role / Device Role / Timing Role: Stores transient alarm events until polled by host processor; retains state during brief power interruptions. Use Value: 3.6-V I/O tolerance allows direct connection to 3.3 V status lines; CLR/PRE enable hardware-initiated reset without software intervention. |
Use Scenario: Converting momentary push-button presses into clean, glitch-free power-on/off control signals for embedded systems. IC Role / Device Role / Timing Role: Configured as toggle flip-flop (Q→D feedback) to generate stable high/low output per press. Use Value: Built-in hysteresis rejects contact bounce; 0.8 V min VCC supports operation directly from brown-out detector rails. |
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 |
|---|---|---|---|
| SN74LVC1G74DCUR | Higher ICC (10 μA typ), wider tpd range (5–10 ns), 1.65–5.5 V VCC range, no Ioff or Schmitt inputs. | Better suited for 5 V legacy interfaces but lacks ultra-low-power and noise-immune features. | Select when interfacing with 5 V logic or requiring higher drive strength; avoid for battery-critical designs. |
| 74AHC1G74SE-7 | Lower Cpd (3.5 pF), 2.0–5.5 V VCC, no Ioff, no Schmitt inputs, 3.5 ns tpd at 5 V. | Optimized for speed and low capacitance in 3.3/5 V systems, but not rated for sub-1 V operation or partial power-down. | Choose for high-speed, low-capacitance point-to-point links where VCC ≥ 2.0 V and power budget permits >1 μA ICC. |
Compared with SN74LVC1G74DCUR and 74AHC1G74SE-7, SN74AUP1G74DCUR uniquely delivers sub-1-μA static current, 0.8 V operation, Ioff, and Schmitt-trigger inputs - making it the only viable option for energy-harvesting, coin-cell, or mixed-voltage hot-swap applications requiring robust signal integrity at ultra-low power.
Availability
SN74AUP1G74DCUR is available at Aetrix Electronics and suitable for LED display drivers, low-power MCU I/O expansion, and telecom line card status latching requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SN74AUP1G74DCUR 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 innovation in low-power logic and precision analog solutions.
SN74AUP1G74DCUR belongs to TI's AUP (Advanced Ultra-Low-Power) logic family, engineered specifically for battery-powered portable electronics, wearables, and energy-efficient IoT endpoints demanding nanowatt static power and wide-voltage interoperability.
FAQ
What is the minimum supply voltage required for guaranteed operation of SN74AUP1G74DCUR?
SN74AUP1G74DCUR is fully specified for operation down to 0.8 V across the full temperature range (–40°C to +85°C). At this voltage, timing parameters such as tpd and fmax are characterized, and functional correctness is guaranteed per the datasheet's Recommended Operating Conditions table.
Does SN74AUP1G74DCUR support partial power-down mode, and how is it implemented?
Yes, SN74AUP1G74DCUR supports partial power-down via its Ioff feature. When VCC = 0 V, the Ioff circuitry disables all outputs, preventing damaging current backflow from live I/O traces into the unpowered device - critical for hot-swap and mixed-supply system architectures.
Can SN74AUP1G74DCUR inputs tolerate voltages higher than VCC, and up to what level?
Yes, SN74AUP1G74DCUR inputs are 3.6-V tolerant and rated for up to 4.6 V regardless of VCC level. This allows safe interfacing with higher-voltage peripherals (e.g., 3.3 V or 5 V sensors) without external level-shifting components or clamping diodes.
How does the Schmitt-trigger input on SN74AUP1G74DCUR improve noise immunity?
The Schmitt-trigger input provides ~250 mV of hysteresis at 3.3 V, meaning the rising threshold (VIH) and falling threshold (VIL) differ by that amount. This prevents multiple toggles due to slow edges or noise on mechanical switch inputs or long PCB traces - eliminating need for external RC filtering.
What is the maximum clock frequency supported by SN74AUP1G74DCUR at 3.3 V supply?
At 3.3 V and CL = 5 pF, SN74AUP1G74DCUR supports a maximum clock frequency (fmax) of 180 MHz at TA = 25°C and 180 MHz at TA = –40°C to +85°C. Performance scales downward at lower VCC levels, e.g., 90 MHz at 3.3 V with CL = 30 pF.
SN74AUP1G74DCUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUP
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Set(Preset) and Reset
- Type:
- D-Type
- Output Type:
- Complementary
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Clock Frequency:
- 100 MHz
- Max Propagation Delay @ V, Max CL:
- 7ns @ 3.3V, 30pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Current - Quiescent (Iq):
- 500 nA
- Input Capacitance:
- 1.5 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
SN74AUP1G74DCUR FAQ
1.How can I place an order for SN74AUP1G74DCUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUP1G74DCUR 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 SN74AUP1G74DCUR reliable?
The price and inventory of SN74AUP1G74DCUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUP1G74DCUR is usually 5 days.
3.What payment methods are accepted for SN74AUP1G74DCUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUP1G74DCUR transactions.
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4.How is shipping managed for SN74AUP1G74DCUR?
SN74AUP1G74DCUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUP1G74DCUR 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 SN74AUP1G74DCUR?
For technical support, including SN74AUP1G74DCUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUP1G74DCUR requirements.
6.How does Aetrix verify that SN74AUP1G74DCUR is sourced from the original manufacturer or authorized distributors?
All SN74AUP1G74DCUR 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 SN74AUP1G74DCUR meets industry standards.
7.What is the process for return or replacement of SN74AUP1G74DCUR?
All SN74AUP1G74DCUR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUP1G74DCUR, 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 SN74AUP1G74DCUR part is unused and in its original packaging.
Return procedure for SN74AUP1G74DCUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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