Overview
The SN74HCT573DWRE4, produced by Texas Instruments, is an octal transparent D-type latch with 3-state outputs. This component is designed to operate within the voltage range of 4.5V to 5.5V, making it suitable for a variety of digital logic applications. The device features high-current 3-state outputs, which are capable of driving highly capacitive or relatively low-impedance loads directly or up to 15 LSTTL loads. This makes it particularly useful for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Key Specifications
| Parameter | Unit | Min | Nom | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 4.5 | 5 | 5.5 |
| High-Level Input Voltage (VIH) | V | 2 | 2 | 2 |
| Low-Level Input Voltage (VIL) | V | 0.8 | 0.8 | 0.8 |
| Output Voltage (VO) | V | 0 | VCC | |
| Input Transition Rise/Fall Time (tt) | ns | 500 | 500 | 500 |
| Operating Free-Air Temperature (TA) | °C | -40 | 85 | |
| Propagation Delay Time (tpd) | ns | 21 | 32 | 48 |
| Output Drive at 5V (IOH/IOL) | mA | -6 | 6 | |
| Low Input Current (II) | nA | ±0.1 | ±1000 | |
| Supply Current (ICC) | μA | 8 | 80 | 160 |
Key Features
- Operating voltage range of 4.5V to 5.5V
- High-Current 3-State Outputs capable of driving bus lines directly or up to 15 LSTTL loads
- Low power consumption, with a maximum supply current (ICC) of 80 μA
- Typical propagation delay time (tpd) of 21 ns
- ±6-mA output drive at 5V
- Low input current of 1 μA max
- Inputs are TTL-Voltage compatible
- Bus-structured pinout
- Buffered output-enable (OE) input for high-impedance state control
Applications
The SN74HCT573DWRE4 is particularly suitable for various digital logic applications, including:
- Implementing buffer registers
- I/O ports
- Bidirectional bus drivers
- Working registers
Q & A
- What is the operating voltage range of the SN74HCT573DWRE4?
The operating voltage range is 4.5V to 5.5V.
- What is the maximum supply current (ICC) of the SN74HCT573DWRE4?
The maximum supply current is 80 μA.
- What is the typical propagation delay time (tpd) of the SN74HCT573DWRE4?
The typical propagation delay time is 21 ns.
- What is the output drive capability at 5V for the SN74HCT573DWRE4?
The output drive capability at 5V is ±6 mA.
- Are the inputs of the SN74HCT573DWRE4 TTL-Voltage compatible?
- What is the purpose of the buffered output-enable (OE) input?
The buffered output-enable (OE) input is used to place the outputs in either a normal logic state or the high-impedance state.
- What are some common applications of the SN74HCT573DWRE4?
- What is the operating free-air temperature range for the SN74HCT573DWRE4?
The operating free-air temperature range is -40°C to 85°C.
- What is the low input current (II) of the SN74HCT573DWRE4?
The low input current is 1 μA max.
- What are the available package types for the SN74HCT573DWRE4?
The available package types include SOIC (DW), SSOP (DB), PDIP (N), SOP (NS), and TSSOP (PW).
