Overview
The SN74LVC573ADWRG4 is an octal transparent D-type latch produced by Texas Instruments. This device is designed to operate within a wide voltage range of 1.65 V to 3.6 V, making it versatile for various applications. It features 3-state outputs, which are particularly suited for driving highly capacitive or relatively low-impedance loads. The latch is ideal for implementing buffer registers, input/output (I/O) ports, bidirectional bus drivers, and working registers.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCC (Supply voltage) | –0.5 | 6.5 | V |
| VI (Input voltage range) | –0.5 | 6.5 | V |
| VO (Output voltage range in high-impedance or power-off state) | –0.5 | 6.5 | V |
| VO (Output voltage range in high or low state) | –0.5 | VCC + 0.5 | V |
| IIK (Input clamp current) | –50 | –50 | mA |
| IOK (Output clamp current) | –50 | –50 | mA |
| IO (Continuous output current) | ±50 | ±50 | mA |
| Continuous current through VCC or GND | ±100 | ±100 | mA |
| Operating free-air temperature | –40 | 85 | °C |
| tpd (Propagation delay time, LE to Q) | 6.9 | 6.9 | ns |
Key Features
- Operates from 1.65 V to 3.6 V supply voltage.
- Inputs accept voltages up to 5.5 V.
- 3-state outputs for driving highly capacitive or low-impedance loads.
- Supports mixed-mode signal operation on all ports.
- 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 standards (2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model).
- Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C.
- Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, TA = 25°C.
Applications
- Servers
- PC and Notebook systems
- Network Switches
- Telecom Infrastructure
- Health & Fitness/Wearables
- Electronic Point of Sales (POS) systems
Q & A
- What is the operating voltage range of the SN74LVC573ADWRG4? The device operates from 1.65 V to 3.6 V.
- What is the maximum input voltage the device can accept? The device can accept input voltages up to 5.5 V.
- What type of outputs does the SN74LVC573ADWRG4 have? The device features 3-state outputs.
- What are the typical applications of the SN74LVC573ADWRG4? It is used in servers, PC and Notebook systems, network switches, telecom infrastructure, health & fitness/wearables, and electronic POS systems.
- Does the SN74LVC573ADWRG4 support partial power-down applications? Yes, it supports live insertion, partial power-down mode, and back drive protection through Ioff circuitry.
- What is the propagation delay time (tpd) of the SN74LVC573ADWRG4? The propagation delay time from LE to Q is typically 6.9 ns at VCC = 3.3 V.
- What is the maximum continuous output current of the SN74LVC573ADWRG4? The maximum continuous output current is ±50 mA.
- What are the thermal metrics for the SN74LVC573ADWRG4? The junction-to-ambient thermal resistance (RθJA) is 102.5 °C/W, and the junction-to-case (top) thermal resistance (RθJCtop) is 35.9 °C/W.
- Does the SN74LVC573ADWRG4 have ESD protection? Yes, it exceeds JESD 22 standards for ESD protection.
- How does the output-enable (OE) input function in the SN74LVC573ADWRG4? The OE input can place the eight outputs in either a normal logic state or the high-impedance state without affecting the internal operations of the latches.
