74HC251DB-Q100J Device Information Summary

Overview

The 74HC251DB-Q100J is an 8-input multiplexer with a 3-state output, designed for high-speed switching applications. It is part of the Nexperia product line and is suitable for a variety of digital circuits requiring multiplexing functionality.

Device Overview

Main Features

• 8-Input Multiplexer: Selects one of eight input signals based on the select lines.
• 3-State Output: Allows the output to be placed in a high-impedance state.
• CMOS Technology: Ensures low power consumption and high noise immunity.
• Wide Operating Voltage Range: 2.0V to 6.0V.
• High-Speed Operation: Suitable for high-frequency applications.
• Compact Package: Available in SOT338-1 (SSOP16) package.

Applications

• Digital Signal Routing: Ideal for routing digital signals in complex systems.
• Microcontroller Interfaces: Used in interfacing with microcontrollers and other digital devices.
• Data Selection: Selects data from multiple sources for processing or transmission.

Electrical Characteristics

Power Supply

• VCC: 2.0V to 6.0V
• Supply Current (ICC): Up to 50 mA

Input and Output Levels

• Input Voltage (VI): 0V to VCC
• Output Voltage (VO): 0V to VCC
• Output Current (IO): ±25 mA

Dynamic Characteristics

• Propagation Delay (tpd):2.0V: 50 ns (typical)4.5V: 18 ns (typical)6.0V: 14 ns (typical)
• Transition Time (tt):2.0V: 75 ns (typical)4.5V: 15 ns (typical)6.0V: 13 ns (typical)

Pin Configuration

Pin Description

• I0 to I7 (Pins 4, 3, 2, 1, 15, 14, 13, 12): Data inputs
• Y (Pin 5): Multiplexer output
• Y (Pin 6): Complementary multiplexer output
• OE (Pin 7): Output enable input (active LOW)
• GND (Pin 8): Ground (0V)
• S0, S1, S2 (Pins 11, 10, 9): Common data select inputs
• VCC (Pin 16): Supply voltage

Functional Description

Truth Table

• The output (Y) is selected based on the combination of the select lines (S0, S1, S2).
• The output enable (OE) line controls whether the output is active or in high-impedance state.

Limiting Values

Absolute Maximum Ratings

• Supply Voltage (VCC): -0.5V to +7V
• Input Clamping Current (IIK): ±20 mA
• Output Clamping Current (IOK): ±20 mA
• Output Current (IO): ±25 mA
• Supply Current (ICC): +50 mA
• Storage Temperature (Tstg): -65°C to +150°C
• Total Power Dissipation (Ptot): 500 mW (derates linearly above 110°C for SOT109-1(SO16) and 91°C for SOT403-1(TSSOP16))

Recommended Operating Conditions

Operating Conditions

• Supply Voltage (VCC): 2.0V to 6.0V
• Input Voltage (VI): 0V to VCC
• Output Voltage (VO): 0V to VCC
• Ambient Temperature (Tamb): -40°C to +125°C
• Input Transition Rate (Δt/ΔV):VCC = 2.0V: 625 ns/VVCC = 4.5V: 139 ns/VVCC = 6.0V: 83 ns/V

Static Characteristics

Input and Output Levels

• High-Level Input Voltage (VIH):VCC = 2.0V: 1.5VVCC = 4.5V: 3.15VVCC = 6.0V: 4.2V
• Low-Level Input Voltage (VIL):VCC = 2.0V: 0.8VVCC = 4.5V: 2.1VVCC = 6.0V: 2.8V
• High-Level Output Voltage (VOH):VCC = 2.0V: 1.9VVCC = 4.5V: 4.4VVCC = 6.0V: 5.9V
• Low-Level Output Voltage (VOL):VCC = 2.0V: 0.1VVCC = 4.5V: 0.1VVCC = 6.0V: 0.1V

Package Information

Package Type

• SOT338-1 (SSOP16): Suitable for surface-mount applications.

Ordering Information

Part Number

• 74HC251DB-Q100J: 8-input multiplexer with 3-state output in SOT338-1 (SSOP16) package.