Overview
The SN74HC573ADWR is an octal transparent D-type latch with 3-state outputs, manufactured by Texas Instruments. This device is designed to drive highly capacitive or relatively low-impedance loads, making it suitable for a variety of applications. The SN74HC573A features a wide operating voltage range from 2 V to 6 V, which enhances its versatility in different circuit designs.
The device operates using CMOS technology, providing balanced output drive and low power consumption. It is particularly useful in implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Operating Voltage Range | 2 | - | 6 | V |
| Output Drive at 5 V | - | ±6 | - | mA |
| Input Current | - | - | 1 | µA |
| Power Consumption (ICC) | - | - | 80 | µA |
| Pulse Duration, LE High | 14 | - | 20 | ns (at VCC = 6 V) |
| Setup Time, Data Before LE↓ | 9 | - | 13 | ns (at VCC = 6 V) |
| Hold Time, Data After LE↓ | 5 | - | - | ns (at VCC = 6 V) |
| Propagation Delay Time (tpd) | 23 | - | 38 | ns (at VCC = 6 V, CL = 50 pF) |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 109.1 | °C/W (DW package) |
Key Features
- Wide operating voltage range from 2 V to 6 V
- High-current 3-state outputs drive bus lines directly up to 15 LSTTL loads
- Low power consumption: 80-µA maximum ICC
- Typical propagation delay time (tpd) of 21 ns
- ±6-mA output drive at 5 V
- Low input current: 1 µA (maximum)
- Bus-structured pinout
Applications
- Buffer registers
- Bidirectional bus drivers
- Working registers
- I/O ports
Q & A
- What is the operating voltage range of the SN74HC573A?
The operating voltage range is from 2 V to 6 V.
- What is the typical propagation delay time (tpd) of the SN74HC573A?
The typical propagation delay time is 21 ns.
- How much current can the outputs drive at 5 V?
The outputs can drive up to ±6 mA at 5 V.
- What is the maximum power consumption (ICC) of the SN74HC573A?
The maximum power consumption is 80 µA.
- What are the typical applications of the SN74HC573A?
Typical applications include buffer registers, bidirectional bus drivers, working registers, and I/O ports.
- What is the junction-to-ambient thermal resistance (RθJA) for the DW package?
The junction-to-ambient thermal resistance for the DW package is 109.1 °C/W.
- What is the setup time for data before LE↓ at VCC = 6 V?
The setup time is 9 ns to 13 ns at VCC = 6 V.
- What is the hold time for data after LE↓ at VCC = 6 V?
The hold time is 5 ns at VCC = 6 V.
- Can the SN74HC573A drive highly capacitive loads?
Yes, the SN74HC573A is designed to drive highly capacitive or relatively low-impedance loads.
- What is the maximum frequency supported by this device?
The maximum frequency supported by this device is 28 MHz.
