Overview
The SN74LVC1G74DCURG4, produced by Texas Instruments, is a single positive-edge-triggered D-type flip-flop with clear and preset functions. This device is part of the LVC (Low-Voltage CMOS) family and is designed for operation over a wide range of supply voltages from 1.65 V to 5.5 V. It features a compact package, including options like VSSOP, X2SON, and UQFN, making it suitable for various applications where space is a constraint. The device supports voltage translation and has built-in Ioff circuitry to prevent backflow current when powered down, enhancing its reliability in partial-power-down scenarios.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage Range (VCC) | -0.5 | 6.5 | V |
| Input Voltage Range (VI) | -0.5 | 6.5 | V |
| Operating Temperature Range | -40 | 125 | °C |
| Maximum Clock Frequency | 80 | 200 | MHz |
| Propagation Delay Time (tpd) at VCC = 5 V | 1.4 | 7.9 | ns |
| Power Dissipation Capacitance (Cpd) at f = 10 MHz | 35 | 40 | pF |
| Junction-to-Ambient Thermal Resistance (RθJA) | 220 | 261 | °C/W |
Key Features
- Single positive-edge-triggered D-type flip-flop with clear and preset functions.
- Operates over a wide supply voltage range from 1.65 V to 5.5 V.
- Inputs accept voltage levels up to 5.5 V.
- Supports voltage translation (e.g., 5 V to 3.3 V, 5 V to 1.8 V, 3.3 V to 1.8 V).
- Ioff circuitry to prevent backflow current when powered down.
- Available in various compact packages: VSSOP, X2SON, UQFN.
- Fully specified for partial-power-down applications.
Applications
The SN74LVC1G74DCURG4 is suitable for a variety of applications, including:
- General-purpose logic circuits.
- Voltage translation in mixed-voltage systems.
- Partial-power-down systems where preventing backflow current is crucial.
- Space-constrained designs due to its compact packaging options.
- Power button circuits and other control logic applications.
Q & A
- What is the operating voltage range of the SN74LVC1G74DCURG4?
The device operates over a supply voltage range from 1.65 V to 5.5 V.
- What types of packages are available for the SN74LVC1G74DCURG4?
The device is available in VSSOP, X2SON, and UQFN packages.
- What is the maximum clock frequency of the SN74LVC1G74DCURG4?
The maximum clock frequency is up to 200 MHz.
- Does the SN74LVC1G74DCURG4 support voltage translation?
Yes, it supports voltage translation between different voltage levels (e.g., 5 V to 3.3 V, 5 V to 1.8 V, 3.3 V to 1.8 V).
- What is the purpose of the Ioff circuitry in the SN74LVC1G74DCURG4?
The Ioff circuitry prevents backflow current when the device is powered down, enhancing reliability in partial-power-down applications.
- What are the thermal characteristics of the SN74LVC1G74DCURG4?
The junction-to-ambient thermal resistance (RθJA) varies by package, ranging from 220°C/W to 261°C/W.
- How does the clear and preset function work on the SN74LVC1G74DCURG4?
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 propagation delay time of the SN74LVC1G74DCURG4?
The propagation delay time (tpd) ranges from 1.4 ns to 7.9 ns depending on the supply voltage and load capacitance.
- Is the SN74LVC1G74DCURG4 suitable for high-temperature environments?
Yes, it operates over a temperature range from -40°C to 125°C.
- What are the power supply recommendations for the SN74LVC1G74DCURG4?
A good bypass capacitor (e.g., 0.1-μF) should be used near the power terminal to prevent power disturbances.
