Overview
The SN74LVC2G74DCUR is a single positive-edge-triggered D-type flip-flop with clear and preset, manufactured by Texas Instruments. This device is designed to operate over a wide voltage range of 1.65 V to 5.5 V, making it versatile for various applications. It features the NanoFree™ package technology, which uses the die as the package, enhancing its compactness and performance.
The flip-flop includes preset (PRE) and clear (CLR) inputs that can set or reset the outputs regardless of the levels of the other inputs. Data at the data (D) input is transferred to the outputs on the positive-going edge of the clock pulse, ensuring precise timing and control.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage (VCC) | 1.65 | 5.5 | V |
| Input Voltage (VI) | -0.5 | 6.5 | V |
| Output Voltage (VO) | -0.5 | VCC + 0.5 | V |
| High-Level Input Voltage (VIH) | 0.65 × VCC (1.65 V to 1.95 V) | 0.7 × VCC (4.5 V to 5.5 V) | V |
| Low-Level Input Voltage (VIL) | 0.35 × VCC (1.65 V to 1.95 V) | 0.3 × VCC (4.5 V to 5.5 V) | V |
| High-Level Output Current (IOH) | -4 mA (VCC = 1.65 V) | -32 mA (VCC = 4.5 V) | mA |
| Low-Level Output Current (IOL) | 4 mA (VCC = 1.65 V) | 32 mA (VCC = 4.5 V) | mA |
| Propagation Delay Time (tpd) | 5.9 ns (at 3.3 V) | ns | |
| Operating Temperature Range | -40 | 125 | °C |
| Package Type | VSSOP (DCU) | ||
| Pins | 8 |
Key Features
- Available in the Texas Instruments NanoFree™ package, which uses the die as the package.
- Supports 5 V VCC operation and inputs accept voltages up to 5.5 V.
- Low power consumption with a maximum ICC of 10 µA.
- ±24 mA output drive at 3.3 V.
- Typical output ground bounce < 0.8 V and typical output undershoot > 2 V at VCC = 3.3 V, TA = 25°C.
- Ioff feature supports live insertion, partial-power-down mode, and back-drive protection.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- ESD protection exceeds JESD 22: 2000 V human-body model, 200 V machine model, and 1000 V charged-device model.
Applications
- Telecom equipment: DC/DC modules, base band units, shelters (Power Distribution Units, Power Monitoring Units, Wireless Battery Monitoring, Remote Electrical Tilt Units, Remote Radio Units).
- Optical modules and networking: EPON, Video Over Fiber.
- Point-to-point microwave backhaul.
- Private Branch Exchanges (PBX) and TETRA base exchanges.
Q & A
- What is the operating voltage range of the SN74LVC2G74?
The SN74LVC2G74 operates over a voltage range of 1.65 V to 5.5 V.
- What is the propagation delay time of the SN74LVC2G74 at 3.3 V?
The propagation delay time is 5.9 ns at 3.3 V.
- What is the maximum output current of the SN74LVC2G74 at 3.3 V?
The maximum output current is ±24 mA at 3.3 V.
- Does the SN74LVC2G74 support partial-power-down mode?
Yes, it supports partial-power-down mode using the Ioff feature.
- What is the ESD protection level of the SN74LVC2G74?
The ESD protection exceeds JESD 22: 2000 V human-body model, 200 V machine model, and 1000 V charged-device model.
- What package type is the SN74LVC2G74 available in?
The SN74LVC2G74 is available in the VSSOP (DCU) package with 8 pins.
- What is the operating temperature range of the SN74LVC2G74?
The operating temperature range is -40°C to 125°C.
- How does the preset and clear function work on the SN74LVC2G74?
A low level at the preset (PRE) or clear (CLR) input sets or resets the outputs, regardless of the levels of the other inputs.
- What is the typical output ground bounce and undershoot of the SN74LVC2G74 at 3.3 V?
The typical output ground bounce is less than 0.8 V, and the typical output undershoot is greater than 2 V at VCC = 3.3 V, TA = 25°C.
- Does the SN74LVC2G74 support voltage translation?
Yes, it allows down voltage translation from 5 V to 3.3 V or from 5 V or 3.3 V to 1.8 V.
