Overview
The SN74AHCT573PWRG4 is an octal transparent D-type latch produced by Texas Instruments. This device is part of the AHCT series, which is known for its high-speed and low-power consumption. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the logic levels of the D inputs. This component is highly versatile and can be used in a variety of applications requiring data storage and transfer.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TSSOP | - |
| Number of Pins | 20 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage (VCC) | 5V ± 0.5V | V |
| High-Level Output Current (IOH) | -8 | mA |
| Low-Level Output Current (IOL) | 8 | mA |
| Input Transition Rise or Fall Rate | 20 | ns/V |
| Pulse Duration, LE High | 5 | ns |
| Setup Time, Data Before LE↓ | 3.5 | ns |
| Hold Time, Data After LE↓ | 1.5 | ns |
| Propagation Delay Time (tpd) D to Q | 5.1 to 9.5 | ns |
| Junction-to-Ambient Thermal Resistance (RθJA) | 116.8 | °C/W |
Key Features
- Inputs are TTL-voltage compatible.
- Latch-up performance exceeds 250mA per JESD 17.
- Buffered output-enable (OE) input allows outputs to be in a high-impedance state.
- High-impedance state and increased drive capability to drive bus lines without interface or pull-up components.
- Retains old data or allows new data entry while outputs are in the high-impedance state.
Applications
- Servers
- PCs and notebooks
- Network switches
- Wearable health and fitness devices
- Telecom infrastructures
- Electronic points-of-sale
Q & A
- What is the primary function of the SN74AHCT573PWRG4? The primary function is to act as an octal transparent D-type latch, where the Q outputs follow the D inputs when the LE input is high, and latch the Q outputs when LE is low.
- What are the different package types available for this component? The SN74AHCT573 is available in various packages including DB (SSOP), DGV (TVSOP), DW (SOIC), N (PDIP), and PW (TSSOP).
- What is the operating temperature range for the SN74AHCT573PWRG4? The operating temperature range is -40°C to 125°C.
- What is the supply voltage for this component? The supply voltage (VCC) is 5V ± 0.5V.
- How does the output-enable (OE) input function? The OE input can place the outputs in either a normal logic state or a high-impedance state, allowing for bus lines to be driven without additional components.
- What are some common applications for the SN74AHCT573PWRG4? Common applications include servers, PCs and notebooks, network switches, wearable health and fitness devices, telecom infrastructures, and electronic points-of-sale.
- What is the propagation delay time (tpd) for the SN74AHCT573PWRG4? The propagation delay time from D to Q is between 5.1 ns and 9.5 ns.
- How does the component handle latch-up performance? The latch-up performance exceeds 250mA per JESD 17.
- What is the junction-to-ambient thermal resistance (RθJA) for the TSSOP package? The RθJA for the TSSOP package is 116.8 °C/W.
- Can the outputs be in a high-impedance state during power-up or power-down? Yes, by tying OE to VCC through a pull-up resistor, the outputs can be in a high-impedance state during power-up or power-down.
