SN74LVTH245APWE4

Product Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: Low Voltage, High-Speed, Tri-State Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Bidirectional Voltage-Level Translator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Number of Channels: 8
• Input/Output Type: CMOS/TTL Compatible
• Propagation Delay: 2.5ns (Max)
• Output Drive Capability: ±12mA

Detailed Pin Configuration

The SN74LVTH245APWE4 has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Active Low Output Enable
2. A1 - Data Input/Output Channel 1
3. B1 - Data Input/Output Channel 1
4. A2 - Data Input/Output Channel 2
5. B2 - Data Input/Output Channel 2
6. A3 - Data Input/Output Channel 3
7. B3 - Data Input/Output Channel 3
8. GND (Ground) - Ground Reference
9. B4 - Data Input/Output Channel 4
10. A4 - Data Input/Output Channel 4
11. B5 - Data Input/Output Channel 5
12. A5 - Data Input/Output Channel 5
13. B6 - Data Input/Output Channel 6
14. A6 - Data Input/Output Channel 6
15. B7 - Data Input/Output Channel 7
16. A7 - Data Input/Output Channel 7
17. B8 - Data Input/Output Channel 8
18. A8 - Data Input/Output Channel 8
19. VCC (Supply Voltage) - Positive Supply Voltage
20. DIR (Direction Control) - Direction Control Input

Functional Features

• Bidirectional voltage-level translation between two different voltage domains.
• Supports both CMOS and TTL input/output levels.
• Tri-state outputs allow multiple devices to share a common bus.
• Low power consumption and high-speed operation.
• ESD protection on all inputs and outputs.

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - High-speed operation enables efficient data transfer. - Tri-state outputs facilitate bus sharing among multiple devices. - ESD protection ensures reliability in harsh environments.

Disadvantages: - Limited number of channels (8 channels). - Requires careful consideration of voltage compatibility between input and output domains.

Working Principles

The SN74LVTH245APWE4 is a bidirectional level shifter/transceiver that allows for voltage translation between two different voltage domains. It operates by receiving data from one domain, translating it to the appropriate voltage level, and transmitting it to the other domain. The direction of data flow is controlled by the DIR pin. When the DIR pin is set to a logic high or low, the device functions as a unidirectional level shifter. When the DIR pin is set to a high-impedance state, the device enters a tri-state mode, allowing multiple devices to share a common bus.

Detailed Application Field Plans

The SN74LVTH245APWE4 is commonly used in various applications where voltage translation is required. Some of the typical application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication systems involving multiple voltage domains.
3. Data acquisition systems with mixed voltage sensors.
4. Industrial automation and control systems.
5. Automotive electronics for signal level translation.

Detailed and Complete Alternative Models

1. SN74LVC245APW: Similar functionality but operates at a lower voltage range (1.65V to 3.6V).
2. SN74LVCH245APW: Higher drive capability and lower propagation delay compared to SN74LVTH245APWE4.
3. SN74AVC4T245PW: Four-channel bidirectional level shifter with higher operating frequency (up to 400MHz).

These alternative models offer similar functionality to the SN74LVTH245APWE4 but may have differences in voltage range, drive capability, or number of channels.

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