IDT74LVC245AQG

Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Bi-directional, 8-bit, voltage level translation, low voltage operation
• Package: 20-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Facilitates bidirectional voltage level translation between different logic families
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Logic Family: LVC (Low Voltage CMOS)
• Number of Channels: 8
• Input/Output Compatibility: TTL, CMOS
• Output Drive Capability: ±24mA
• Propagation Delay: 4.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The IDT74LVC245AQG 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. A4 - Data Input/Output Channel 4
9. B4 - Data Input/Output Channel 4
10. GND (Ground) - Ground Reference
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 - Power Supply Voltage
20. DIR (Direction Control) - Direction Control Input

Functional Features

• Bi-directional voltage level translation between different logic families
• Allows interfacing between systems operating at different voltage levels
• Provides bidirectional data flow with direction control
• Supports TTL and CMOS input/output compatibility
• Low power consumption and high-speed operation
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels - Wide supply voltage range allows compatibility with various systems - High-speed operation facilitates efficient data transfer - ESD protection ensures robustness against electrostatic discharges

Disadvantages: - Limited to 8-bit data transmission - Requires careful consideration of voltage level compatibility for proper operation

Working Principles

The IDT74LVC245AQG is a bidirectional level shifter and bus transceiver. It translates voltage levels between two different logic families, allowing seamless communication between devices operating at different voltage levels. The direction of data flow is controlled by the DIR pin. When DIR is set to logic high, data flows from the A side to the B side, and when DIR is set to logic low, data flows from the B side to the A side.

The device operates within a wide supply voltage range of 1.2V to 3.6V, making it compatible with various systems. It supports both TTL and CMOS input/output compatibility, providing flexibility in system integration. The IDT74LVC245AQG also features ESD protection on all inputs and outputs, ensuring robustness against electrostatic discharges.

Detailed Application Field Plans

The IDT74LVC245AQG is commonly used in various applications where voltage level translation and bidirectional data transfer are required. Some of the typical application fields include:

1. Microcontroller interfacing: The IC facilitates communication between microcontrollers operating at different voltage levels, enabling seamless integration of multiple devices within a system.
2. Memory modules: It is utilized in memory modules to enable data transfer between memory chips operating at different voltage levels.
3. Communication systems: The device plays a crucial role in communication systems, allowing data exchange between different logic families used in transceivers, routers, and switches.
4. Industrial automation: It finds application in industrial automation systems where different components operate at varying voltage levels, ensuring proper data transmission and control signals.

Alternative Models

1. SN74LVC245A: Texas Instruments' alternative model offering similar functionality and specifications.
2. MC74LVX245: ON Semiconductor's alternative model with comparable features and pin configuration.
3. 74LVC245: NXP Semiconductors