Overview
The MC74AC540DWG is an octal buffer/line driver with 3-state outputs, manufactured by onsemi. This device is part of the MC74AC540 and MC74ACT540 series, designed to be used as memory and address drivers, clock drivers, and bus-oriented transmitter/receivers. The MC74AC540DWG is particularly useful for its flow-through architecture, where inputs and outputs are on opposite sides of the package, making it ideal for use as output ports for microprocessors, thereby easing layout and increasing PC board density.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| DC Supply Voltage (VCC) | −0.5 to +6.5 | V | Referenced to GND |
| DC Input Voltage (VIN) | −0.5 to VCC + 0.5 | V | Referenced to GND |
| DC Output Voltage (VOUT) | −0.5 to VCC + 0.5 | V | Referenced to GND |
| Propagation Delay (tPLH) | 1.5 to 8.0 | ns | TA = −40°C to +85°C, CL = 50 pF |
| Output Enable Time (tPZH) | 2.5 to 11.5 | ns | TA = −40°C to +85°C, CL = 50 pF |
| Output Disable Time (tPHZ) | 1.5 to 14.0 | ns | TA = −40°C to +85°C, CL = 50 pF |
| Maximum High Level Input Voltage (VIH) | 2.1 to 5.5 | V | VCC = 3.0 to 5.5 V |
| Maximum Low Level Input Voltage (VIL) | 0.9 to 1.65 | V | VCC = 3.0 to 5.5 V |
| Minimum High Level Output Voltage (VOH) | 2.9 to 5.4 | V | IOUT = −50 μA |
| Maximum Low Level Output Voltage (VOL) | 0.1 | V | IOUT = 50 μA |
| Maximum Output Sink/Source Current (IOUT) | ±50 mA | mA | |
| Storage Temperature Range (TSTG) | −65 to +150 | °C |
Key Features
- 3-State Outputs
- Inputs and Outputs on Opposite Sides of the Package, Allowing Easier Interface to Microprocessors
- Outputs Source/Sink 24 mA
- MC74AC540 Provides Inverted Outputs, MC74AC541 Provides Noninverted Outputs
- ′ACT540 and ′ACT541 Have TTL Compatible Inputs
- Pb-Free Devices
Applications
The MC74AC540DWG is suitable for various applications including:
- Memory and Address Drivers
- Clock Drivers
- Bus-Oriented Transmitter/Receivers
- Output Ports for Microprocessors
Q & A
- What is the primary function of the MC74AC540DWG?
The MC74AC540DWG is an octal buffer/line driver designed for use as memory and address drivers, clock drivers, and bus-oriented transmitter/receivers. - What is the significance of the flow-through architecture in the MC74AC540DWG?
The flow-through architecture, where inputs and outputs are on opposite sides of the package, makes it easier to interface with microprocessors and increases PC board density. - What are the output characteristics of the MC74AC540DWG?
The device has 3-state outputs that can source/sink up to 24 mA and have a minimum high level output voltage of 2.9 V to 5.4 V. - What are the input voltage ranges for the MC74AC540DWG?
The input voltage ranges from −0.5 V to VCC + 0.5 V, referenced to GND. - What is the propagation delay of the MC74AC540DWG?
The propagation delay (tPLH) ranges from 1.5 ns to 8.0 ns at TA = −40°C to +85°C and CL = 50 pF. - Is the MC74AC540DWG Pb-free?
Yes, the MC74AC540DWG is a Pb-free device. - What are the storage temperature ranges for the MC74AC540DWG?
The storage temperature range is −65°C to +150°C. - What are the typical applications of the MC74AC540DWG?
Typical applications include memory and address drivers, clock drivers, and bus-oriented transmitter/receivers. - How does the MC74AC540 differ from the MC74AC541?
The MC74AC540 provides inverted outputs, while the MC74AC541 provides noninverted outputs. - What is the maximum output sink/source current of the MC74AC540DWG?
The maximum output sink/source current is ±50 mA.
