Overview
The 74LVC245ADB,112 is an octal bus transceiver with 3-state outputs, manufactured by NXP Semiconductors. This device is part of the 74LVC245A series and is designed to facilitate bidirectional data transmission between two buses. It features an output enable (OE) and a send/receive (DIR) pin for direction control, allowing it to act as a translator in mixed 3.3 V and 5 V environments. The device is known for its low power consumption and compatibility with CMOS and TTL logic levels.
Key Specifications
| Parameter | Description |
|---|---|
| Type Number | 74LVC245ADB |
| Package | SSOP20 (SOT339-1) |
| Supply Voltage Range | 1.2 V to 3.6 V |
| Input Voltage Range | Up to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C and -40 °C to +125 °C |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
| Compliance | JESD8-7A (1.65 V to 1.95 V), JESD8-5A (2.3 V to 2.7 V), JESD8-C/JESD36 (2.7 V to 3.6 V) |
Key Features
- Wide supply voltage range from 1.2 V to 3.6 V
- CMOS low-power consumption
- Direct interface with TTL levels
- Overvoltage tolerant inputs up to 5.5 V
- Bus hold on all data inputs (for 74LVCH245A)
- IOFF circuitry for partial power-down mode operation
- Schmitt-trigger action at all inputs for tolerance of slower input rise and fall times
Applications
The 74LVC245ADB is suitable for a variety of applications, including:
- Mixed 3.3 V and 5 V environments where voltage translation is necessary
- Low-power CMOS logic circuits
- Systems requiring bidirectional data transmission between two buses
- Partial power-down applications where IOFF circuitry is beneficial
Q & A
- What is the primary function of the 74LVC245ADB?
The primary function is to act as an octal bus transceiver with 3-state outputs, facilitating bidirectional data transmission between two buses.
- What is the supply voltage range for the 74LVC245ADB?
The supply voltage range is from 1.2 V to 3.6 V.
- What type of package does the 74LVC245ADB come in?
The device comes in an SSOP20 (SOT339-1) package.
- Is the 74LVC245ADB compatible with TTL logic levels?
- What is the ESD protection level of the 74LVC245ADB?
The device has HBM ESD protection exceeding 2000 V and CDM ESD protection exceeding 1000 V.
- Does the 74LVC245ADB support partial power-down mode?
- What is the operating temperature range of the 74LVC245ADB?
The operating temperature range is from -40 °C to +85 °C and -40 °C to +125 °C.
- Is the 74LVC245ADB RoHS compliant?
- What is the purpose of the Schmitt-trigger action in the 74LVC245ADB?
The Schmitt-trigger action makes the circuit tolerant of slower input rise and fall times.
- Can the 74LVC245ADB be used in mixed voltage environments?
