Overview
The SN74LVC573ADWR is an octal transparent D-type latch produced by Texas Instruments. This device is designed for operation over a wide voltage range, from 1.65 V to 3.6 V, making it versatile for various applications. It features 3-state outputs, which are specifically designed to drive highly capacitive or relatively low-impedance loads. The latch is particularly suitable for implementing buffer registers, input/output (I/O) ports, bidirectional bus drivers, and working registers. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the logic levels present at the D inputs.
Key Specifications
| Parameter | Unit | Min | Max |
|---|---|---|---|
| VCC (Supply Voltage) | V | 1.65 | 3.6 |
| VI (Input Voltage Range) | V | -0.5 | 6.5 |
| VO (Output Voltage Range in High or Low State) | V | -0.5 | VCC + 0.5 |
| IOH (High-Level Output Current) | mA | -24 (at VCC = 3 V) | |
| IOL (Low-Level Output Current) | mA | 24 (at VCC = 3 V) | |
| TA (Operating Free-Air Temperature) | °C | -40 | 85 |
| tpd (Propagation Delay, LE to Q) | ns | 7.7 (at VCC = 3.3 V) | 22.8 (at VCC = 3.3 V) |
| tsu (Setup Time, Data before LE↓) | ns | 2 | |
| th (Hold Time, Data after LE↓) | ns | 2.5 |
Key Features
- Supports mixed-mode signal operation on all ports (5-V input/output voltage with 3.3-V VCC).
- Ioff supports live insertion, partial power down mode, and back drive protection.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- 3-state outputs designed for driving highly capacitive or relatively low-impedance loads.
- Buffered output-enable (OE) input.
Applications
- Buffer registers.
- Input/output (I/O) ports.
- Bidirectional bus drivers.
- Working registers.
Q & A
- What is the voltage range for the SN74LVC573ADWR?
The SN74LVC573ADWR operates over a voltage range of 1.65 V to 3.6 V.
- What is the purpose of the 3-state outputs in the SN74LVC573ADWR?
The 3-state outputs are designed specifically for driving highly capacitive or relatively low-impedance loads.
- What are the typical applications of the SN74LVC573ADWR?
Typical applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers.
- What is the maximum propagation delay from LE to Q at VCC = 3.3 V?
The maximum propagation delay from LE to Q at VCC = 3.3 V is approximately 22.8 ns.
- What is the setup time for data before LE goes low?
The setup time for data before LE goes low is 2 ns.
- What is the hold time for data after LE goes low?
The hold time for data after LE goes low is 2.5 ns.
- Does the SN74LVC573ADWR have ESD protection?
- What are the operating temperature ranges for the SN74LVC573ADWR?
The operating free-air temperature range is from -40°C to 85°C.
- What packages are available for the SN74LVC573ADWR?
The device is available in various packages including SOIC, SSOP, TVSOP, and others.
- Does the SN74LVC573ADWR support live insertion and partial power down mode?
