SN74ABTE16246DL

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Buffer/Driver
• Characteristics: High-speed, low-power, 16-bit bus transceiver with 3-state outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Provides bidirectional level shifting and voltage translation between different logic levels
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Logic Family: ABT
• Number of Bits: 16
• Supply Voltage Range: 2 V to 5.5 V
• Input/Output Voltage Levels: 2 V to 5.5 V
• Output Drive Capability: ±24 mA
• Propagation Delay: 4.8 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74ABTE16246DL has a total of 48 pins, which are organized as follows:

• Pins 1-8: A1-A8 (Input/Output pins for Port A)
• Pins 9-16: B1-B8 (Input/Output pins for Port B)
• Pins 17-24: C1-C8 (Input/Output pins for Port C)
• Pins 25-32: D1-D8 (Input/Output pins for Port D)
• Pins 33-40: G1-G8 (Output Enable pins for Port A)
• Pins 41-48: G9-G16 (Output Enable pins for Port B)

Functional Features

• Bidirectional data flow between ports A and B
• 3-state outputs allow multiple devices to share the same bus
• Non-inverting outputs for both input and output data
• Schmitt-trigger inputs for noise immunity
• Power-up 3-state feature ensures bus isolation during power-up and power-down

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Low-power consumption helps in reducing overall system energy requirements - 3-state outputs enable bus sharing and reduce the number of required pins - Schmitt-trigger inputs provide robustness against noise

Disadvantages: - Limited voltage range (2 V to 5.5 V) may not be suitable for all applications - Propagation delay of 4.8 ns may introduce timing constraints in certain high-speed systems

Working Principles

The SN74ABTE16246DL operates by receiving input data from one port (A) and transmitting it to another port (B) bidirectionally. The direction of data flow is controlled by the Output Enable pins (G1-G16). When an Output Enable pin is active, the corresponding port's output drivers are enabled, allowing data to be transmitted. Conversely, when an Output Enable pin is inactive, the output drivers are disabled, effectively isolating the port from the bus.

The device utilizes non-inverting buffers, which maintain the same logic level as the input data. This ensures that the output data matches the input data, making it suitable for applications where signal integrity is crucial.

Detailed Application Field Plans

The SN74ABTE16246DL finds applications in various fields, including:

1. Communication Systems: Used for level shifting and voltage translation between different logic families in communication interfaces.
2. Industrial Automation: Enables bidirectional data transfer between different subsystems or modules operating at different voltage levels.
3. Automotive Electronics: Facilitates communication between microcontrollers and peripheral devices with varying voltage requirements.
4. Consumer Electronics: Provides level shifting capabilities for connecting devices with different logic levels, such as smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

1. SN74ABT16245: Similar to SN74ABTE16246DL, but with 8-bit bus transceiver instead of 16-bit.
2. SN74LVC16245A: Low-voltage CMOS alternative with 5 V tolerant inputs and outputs.
3. SN74HCT245: Octal bus transceiver with 3-state outputs and TTL-compatible inputs.

These alternative models offer similar functionality but may have different specifications or package options to suit specific application requirements.

Word count: 511 words