Model Information for MC74ACT257DG

General Description

The MC74ACT257DG is a quad 2-input multiplexer with 3-state outputs, designed for high-speed and ultra-low-power applications. It allows the selection of four bits of data from two sources using a common data select input. The outputs can be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, enabling direct interfacing with bus-oriented systems.

Key Features

• High-Speed Performance: Achieves low propagation delay.
• Ultra-Low Power: Designed for low power consumption.
• 3-State Outputs: Outputs can be placed in a high impedance state.
• Noninverting Outputs: Data appears at the outputs in true (noninverted) form.
• TTL-Compatible Inputs: Suitable for use with TTL logic levels.
• Pb-Free Device: Complies with environmental standards.

Pin Configuration

The MC74ACT257DG is available in a 16-pin SOIC (Small Outline Integrated Circuit) package. The pin configuration is as follows:

TableCopy

Applications

• Multiplexer Expansion: By tying outputs together.
• Bus-Oriented Systems: Ideal for interfacing with bus systems.
• High-Speed Data Selection: Suitable for applications requiring fast data switching.
• Noninverting Signal Routing: Ensures signal integrity with noninverting outputs.

Ordering Information

• Part Number: MC74ACT257DG
• Package Type: 16-pin SOIC (Pb-Free)
• Shipping: 48 Units / Rail

Electrical Characteristics

• Supply Voltage (Vcc): 4.5V to 5.5V
• DC Input Voltage (V): -0.5V to Vcc + 0.5V
• DC Output Voltage (Vo): -0.5V to Vcc + 0.5V
• Output High Voltage (VOH): 4.49V to 5.49V (Vcc = 5.5V)
• Output Low Voltage (VOL): 0.001V to 0.1V (Vcc = 5.5V)
• Propagation Delay (tPD): 5.0ns to 7.0ns (Vcc = 5.0V, TA = +25°C)
• Output Enable Time (tpZH, tpZL): 5.0ns to 9.0ns (Vcc = 5.0V, TA = +25°C)
• Output Disable Time (tpHZ, tpLZ): 5.0ns to 10.0ns (Vcc = 5.0V, TA = +25°C)

Absolute Maximum Ratings

• Supply Voltage (Vcc): -0.5V to +7.0V
• DC Input Voltage (V): -0.5V to Vcc + 0.5V
• DC Output Voltage (Vo): -0.5V to Vcc + 0.5V
• DC Input Diode Current (IK): ±20mA
• DC Output Diode Current (loK): ±50mA
• DC Output Sink/Source Current (1o): ±50mA
• Storage Temperature (TSTG): -65°C to +150°C
• Lead Temperature (TL): 260°C (1mm from case for 10 seconds)
• Junction Temperature (TJ): +150°C

Recommended Operating Conditions

• Supply Voltage (Vcc): 4.5V to 5.5V
• DC Input Voltage (VIN): 0V to Vcc
• Operating Ambient Temperature (TA): -40°C to +85°C
• Output Current - High (IOH): -24mA
• Output Current - Low (IOL): 24mA

Detailed Specifications

• Input Capacitance (CIN): 4.5pF (VCC = 5.0V)
• Power Dissipation Capacitance (CPD): 50pF (VCC = 5.0V)
• Maximum Quiescent Supply Current (ICC): 80µA (Vcc = 5.5V, VIN = Vcc or GND)

Package Dimensions

• Package Type: SOIC-16
• Shipping: 48 Units / Rail