Overview
The MC74AC373DWG, produced by onsemi, is an Octal Transparent Latch with 3-State Outputs. This integrated circuit is designed for bus-organized system applications and features eight D-type latches in a single package. When the Latch Enable (LE) input is HIGH, the latches are transparent, allowing data on the D inputs to pass through. When LE is LOW, the latches store the data that meets the setup time preceding the HIGH-to-LOW transition of LE. The 3-state outputs are controlled by the Output Enable (OE) input, which can set the outputs to either a 2-state mode or a high impedance state.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| VCC (Supply Voltage) | 2.0 to 6.0 | V | For 74AC devices |
| VCC (Supply Voltage) | 4.5 to 5.5 | V | For 74ACT devices |
| VIN (Input Voltage) | 0 to VCC + 0.5 | V | Referenced to GND |
| VOUT (Output Voltage) | 0 to VCC + 0.5 | V | Referenced to GND |
| IOH (Output Current - High) | -24 mA | mA | |
| IOL (Output Current - Low) | 24 mA | mA | |
| TA (Operating Ambient Temperature) | -40 to 85 | °C | |
| tPLH (Propagation Delay Dn to On) | 7.0 to 10.5 ns | ns | VCC = 5.0 V, CL = 50 pF |
| tPHL (Propagation Delay Dn to On) | 7.0 to 10.5 ns | ns | VCC = 5.0 V, CL = 50 pF |
| ts (Setup Time, HIGH or LOW) | 2.0 to 4.5 ns | ns | Dn to LE |
| th (Hold Time, HIGH or LOW) | 0 to 1.0 ns | ns | Dn to LE |
Key Features
- Eight D-type latches in a single package
- 3-state outputs for bus interfacing
- Outputs source/sink 24 mA
- 74ACT373 has TTL compatible inputs
- Pb-free packages available
Applications
The MC74AC373DWG is suitable for various bus-organized system applications, including data storage and transfer in digital systems, microprocessor and microcontroller interfaces, and other applications requiring transparent latching with 3-state outputs.
Q & A
- What is the MC74AC373DWG?
The MC74AC373DWG is an Octal Transparent Latch with 3-State Outputs produced by onsemi.
- How many latches does the MC74AC373DWG contain?
The MC74AC373DWG contains eight D-type latches in a single package.
- What is the function of the Latch Enable (LE) input?
The Latch Enable (LE) input controls the transparency of the latches. When LE is HIGH, the latches are transparent, and when LE is LOW, the latches store the data that meets the setup time preceding the HIGH-to-LOW transition of LE.
- What is the function of the Output Enable (OE) input?
The Output Enable (OE) input controls the state of the outputs. When OE is LOW, the outputs are in the 2-state mode, and when OE is HIGH, the outputs are in the high impedance state.
- What are the typical operating voltage ranges for the MC74AC373 and MC74ACT373?
The typical operating voltage range for the 74AC devices is 2.0 to 6.0 V, and for the 74ACT devices, it is 4.5 to 5.5 V.
- What is the maximum output current for the MC74AC373DWG?
The outputs can source or sink up to 24 mA.
- What is the operating temperature range for the MC74AC373DWG?
The operating ambient temperature range is -40°C to 85°C.
- What is the propagation delay for the MC74AC373DWG?
The propagation delay from Dn to On is typically between 7.0 to 10.5 ns at VCC = 5.0 V and CL = 50 pF.
- Are the MC74AC373DWG packages Pb-free?
- What are some common applications for the MC74AC373DWG?
