Product Overview: 74HCT253 - Dual 4-channel multiplexer with 3-state outputs

The 74HCT253 is a high-speed Si-gate CMOS device and is pin compatible with low-power Schottky TTL (LSTTL). Manufactured by NXP Semiconductors, it is designed to provide high-performance multiplexing capabilities in digital systems. The device features two independent 4-channel multiplexers with 3-state outputs that can interface directly with the bus-organized systems.

Key Features

• Logic Family: HCT
• Logic Type: Dual 4-Channel Multiplexer
• Output Type: 3-State
• Propagation Delay Time: 19 ns (typical) at Vcc = 5V
• Operating Temperature: -40°C to +125°C
• Package Type: Available in multiple package options including SO, TSSOP, and DIP
• Supply Voltage Range: 4.5V to 5.5V
• Pin Configuration: 16-Pin

Functionality

The multiplexer has two 4-channel input sections, each with its own address and enable inputs. Selection of the data inputs is controlled by the address inputs (A0, A1), and the device can be enabled or disabled by the enable inputs (E1, E2). The 74HCT253 has 3-state outputs, which means the outputs can be set to a high impedance state. This feature allows for multiple devices to be connected to the same data bus without interference.

Applications

The 74HCT253 is suitable for a wide range of applications, including:

• Digital multiplexing
• Data routing
• Signal gating
• Function generation
• Computer logic

Quality and Reliability

NXP Semiconductors is committed to delivering high-quality products. The 74HCT253 is tested rigorously to ensure it meets the industry standards for performance and reliability. Its wide operating temperature range makes it suitable for industrial applications where temperature extremes are common.