Overview
The SN74ABT573ADWR is an 8-bit 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 various applications such as buffer registers, I/O ports, bidirectional bus drivers, and working registers. The latch-enable (LE) input allows the outputs to follow the data (D) inputs when high, and latch the outputs at the logic levels set up at the D inputs when low. The output-enable (OE) input can place the outputs in either a normal logic state or a high-impedance state, which is particularly useful for bus line management without the need for interface or pullup components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 4.5 to 5.5 | V |
| Operating Temperature Range | -40 to 85 | °C |
| High-Level Input Voltage | 2 | V |
| Low-Level Input Voltage | 0.8 | V |
| High-Level Output Current | -32 | mA |
| Low-Level Output Current | 64 | mA |
| Input Transition Rise or Fall Rate | 5 | ns/V |
| Package Type | SOIC (DW) | |
| Pins | 20 |
Key Features
- 3-state outputs designed for driving highly capacitive or low-impedance loads.
- High-drive outputs with 32-mA IOH and 64-mA IOL.
- Supports partial-power-down mode operation using Ioff circuitry.
- Latch-up performance exceeds 500 mA per JEDEC Standard JESD 17.
- ESD protection exceeds JESD 22, with 2000-V Human-Body Model and 200-V Machine Model.
- Buffered output-enable (OE) input for high-impedance state control.
Applications
- Buffer registers
- I/O ports
- Bidirectional bus drivers
- Working registers
Q & A
- What is the primary function of the SN74ABT573ADWR? The SN74ABT573ADWR is an 8-bit transparent D-type latch with 3-state outputs, designed for driving highly capacitive or low-impedance loads.
- What is the operating temperature range of the SN74ABT573ADWR? The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the SN74ABT573ADWR? The supply voltage range is 4.5 V to 5.5 V.
- What is the purpose of the output-enable (OE) input? The OE input allows the outputs to be placed in either a normal logic state or a high-impedance state.
- Does the SN74ABT573ADWR support partial-power-down mode? Yes, it supports partial-power-down mode using Ioff circuitry.
- What is the maximum low-level output current of the SN74ABT573ADWR? The maximum low-level output current is 64 mA.
- What type of ESD protection does the SN74ABT573ADWR have? It has ESD protection exceeding JESD 22, with 2000-V Human-Body Model and 200-V Machine Model.
- What package types are available for the SN74ABT573ADWR? It is available in SOIC (DW), among other package types.
- How many pins does the SOIC (DW) package of the SN74ABT573ADWR have? The SOIC (DW) package has 20 pins.
- What are some common applications of the SN74ABT573ADWR? Common applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers.
