Overview
The 74LVC245AD-Q100J is an octal dual supply translating transceiver produced by Nexperia USA Inc. This device is designed to facilitate communication between 3 V and 5 V buses in mixed supply environments. It features 3-state bus compatible outputs in both send and receive directions, making it versatile for various applications.
The transceiver includes an output enable (OE) and a send/receive (DIR) input for direction control. A HIGH on OE causes the outputs to assume a high-impedance OFF-state, effectively isolating the buses. This device is particularly useful in scenarios where voltage translation between different logic levels is necessary.
Key Specifications
| Type number | VCC(A) (V) | VCC(B) (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Number of bits | fmax (MHz) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC245AD-Q100J | 1.5 to 5.5 | 1.5 to 3.6 | CMOS/LVTTL | ± 24 | 2.9 | 8 | 175 | Low | -40 to +125 | 84 | 60 | SO20 |
Key Features
- Automotive Product Qualification: Qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1), making it suitable for automotive applications.
- Voltage Translation: Designed to interface between 3 V and 5 V buses in mixed supply environments.
- Output Enable and Direction Control: Features an output enable (OE) and a send/receive (DIR) input for direction control.
- 3-State Outputs: Outputs can assume a high-impedance OFF-state when OE is HIGH.
- Wide Supply Voltage Range: VCC(A) from 1.5 V to 5.5 V and VCC(B) from 1.5 V to 3.6 V.
- CMOS Low-Power Consumption: Low power consumption, suitable for energy-efficient designs.
- TTL Interface Capability: Compatible with TTL levels at 3.3 V.
- Overvoltage Tolerant Inputs: Inputs are tolerant up to 5.5 V.
- ESD Protection: HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- Temperature Range: Specified from -40 °C to +85 °C and -40 °C to +125 °C.
Applications
The 74LVC245AD-Q100J is versatile and can be used in various applications, including:
- Automotive Systems: Suitable for use in automotive applications due to its AEC-Q100 qualification.
- Mixed Voltage Systems: Ideal for systems that require translation between 3 V and 5 V logic levels.
- Industrial Automation: Can be used in industrial automation systems where robust and reliable voltage translation is necessary.
- Consumer Electronics: Applicable in consumer electronics that require low-power, high-reliability voltage translation.
- Embedded Systems: Useful in embedded systems that need to interface between different voltage domains.
Q & A
- What is the primary function of the 74LVC245AD-Q100J?
The primary function is to act as an octal dual supply translating transceiver, facilitating communication between 3 V and 5 V buses.
- What are the key control inputs for this device?
The key control inputs are the output enable (OE) and the send/receive (DIR) inputs.
- What is the significance of the 3-state outputs?
The 3-state outputs can assume a high-impedance OFF-state when OE is HIGH, effectively isolating the buses.
- What is the supply voltage range for this device?
VCC(A) ranges from 1.5 V to 5.5 V and VCC(B) ranges from 1.5 V to 3.6 V.
- Is the device ESD protected?
Yes, it has ESD protection: HBM exceeds 2000 V and CDM exceeds 1000 V.
- What are the operating temperature ranges for this device?
Specified from -40 °C to +85 °C and -40 °C to +125 °C.
- Is the device suitable for automotive applications?
Yes, it is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
- What is the maximum frequency of operation for this device?
The maximum frequency of operation is 175 MHz.
- What package options are available for this device?
Available in SO20 (SOT163-1) package among others.
- Does the device support TTL interface capability?
Yes, it supports TTL interface capability at 3.3 V.
