Overview
The SN74LVC574ADWR is an octal edge-triggered D-type flip-flop produced by Texas Instruments. This device is designed to operate within a voltage range of 1.65 V to 3.6 V, making it versatile for various applications. It features 3-state outputs, which are particularly suitable for driving highly capacitive or relatively low-impedance loads. The flip-flop is triggered on the positive transition of the clock (CLK) input, setting the Q outputs to the logic levels at the data (D) inputs. The device also includes a buffered output-enable (OE) input to control the output state, allowing for high-impedance or normal logic states.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 20-SOIC (0.295", 7.50mm Width) |
| Operating Temperature Range (°C) | -40 to 125 |
| Voltage - Supply | 1.65 V to 3.6 V |
| Input Voltage Range | Up to 5.5 V |
| Max Propagation Delay @ V, Max CL | 6.8 ns @ 3.3 V, 50 pF |
| Trigger Type | Positive Edge |
| Current - Output High, Low | 24 mA, 24 mA |
| Current - Quiescent (Iq) | 1.5 µA |
| Input Capacitance | 4 pF |
| Mounting Type | Surface Mount |
| ESD Protection | 2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model |
Key Features
- Operate from 1.65 V to 3.6 V, with inputs accepting voltages up to 5.5 V.
- Specified for operation from -40°C to 85°C, -40°C to 125°C, and -55°C to 125°C.
- Max propagation delay of 7 ns at 3.3 V.
- Typical output ground bounce < 0.8 V and output overshoot > 2 V at VCC = 3.3 V, TA = 25°C.
- Supports mixed-mode signal operation on all ports (5-V input/output voltage with 3.3-V VCC).
- Supports partial-power-down mode operation using Ioff.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 standards.
Applications
The SN74LVC574ADWR is particularly suitable for various applications including:
- Implementing buffer registers.
- I/O ports.
- Bidirectional bus drivers.
- Working registers.
- Mixed 3.3-V/5-V system environments as translators.
Q & A
- What is the operating voltage range of the SN74LVC574ADWR?
The SN74LVC574ADWR operates within a voltage range of 1.65 V to 3.6 V.
- What is the maximum propagation delay at 3.3 V?
The maximum propagation delay at 3.3 V is 7 ns.
- What is the purpose of the output-enable (OE) input?
The output-enable (OE) input can be used to place the eight outputs in either a normal logic state or the high-impedance state.
- Does the SN74LVC574ADWR support partial-power-down mode operation?
- What is the ESD protection level of the SN74LVC574ADWR?
The SN74LVC574ADWR has ESD protection exceeding 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- What are the typical output ground bounce and overshoot values?
The typical output ground bounce is less than 0.8 V, and the typical output overshoot is greater than 2 V at VCC = 3.3 V, TA = 25°C.
- Can the SN74LVC574ADWR be used in mixed 3.3-V/5-V system environments?
- What is the clock trigger type of the SN74LVC574ADWR?
The clock trigger type is positive edge.
- What is the input capacitance of the SN74LVC574ADWR?
The input capacitance is 4 pF.
- What are the typical output current values for high and low states?
The typical output current values are 24 mA for both high and low states.
