Overview
The 74LVC1T45GS,132 is a single-bit, dual-supply transceiver with 3-state outputs, manufactured by Nexperia USA Inc. This device is designed to enable bidirectional level translation between different voltage levels, making it versatile for various electronic designs. It features two 1-bit input-output ports (A and B), a direction control input (DIR), and dual supply pins (VCC(A) and VCC(B)) that can operate within a wide voltage range from 1.2 V to 5.5 V. This capability allows the device to translate between different low-voltage nodes such as 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and 5.0 V.
Key Specifications
| Type Number | VCC(A) (V) | VCC(B) (V) | Logic Switching Levels | Output Drive Capability (mA) | tpd (ns) | Number of Bits | Power Dissipation Considerations | Tamb (°C) | Package Name | Category |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC1T45GS | 1.2 - 5.5 | 1.2 - 5.5 | CMOS/LVTTL | ± 24 | 2.5 | 1 | Low | -40 to +125 | XSON6 (SOT1202) | Bi-directional / Direction controlled |
Key Features
- Dual Supply Operation: The device can operate with two separate supply voltages (VCC(A) and VCC(B)) ranging from 1.2 V to 5.5 V, enabling level translation between different voltage nodes.
- 3-State Outputs: The outputs can be set to a high-impedance state, which is useful for bus applications.
- Direction Control: A direction control input (DIR) allows for bidirectional data transmission between ports A and B.
- Partial Power-Down Capability: The device is fully specified for partial power-down applications using IOFF circuitry, preventing backflow current when powered down.
- Active Bus Hold Circuitry: Available in the 74LVCH1T45 variant, this feature holds unused or floating data inputs at a valid logic level.
Applications
The 74LVC1T45GS,132 is suitable for a wide range of applications across various industries, including:
- Automotive: For level translation in automotive systems where different voltage levels are used.
- Industrial: In industrial control systems and automation where voltage level translation is necessary.
- Consumer Electronics: For devices that require communication between different voltage domains, such as in mobile devices and wearables).
- Computing and Power Systems: In computing systems and power management circuits where level translation is critical).
Q & A
- What is the primary function of the 74LVC1T45GS,132?
The primary function is to enable bidirectional level translation between different voltage levels, making it a dual-supply transceiver with 3-state outputs).
- What is the voltage range for VCC(A) and VCC(B)?
The voltage range for both VCC(A) and VCC(B) is from 1.2 V to 5.5 V).
- How does the direction control input (DIR) work?
A HIGH on DIR allows transmission from port A to port B, while a LOW on DIR allows transmission from port B to port A).
- What is the purpose of the IOFF circuitry?
The IOFF circuitry disables the output, preventing any damaging backflow current through the device when it is powered down).
- What package type is the 74LVC1T45GS,132 available in?
The device is available in the XSON6 (SOT1202) package).
- What are the operating temperature ranges for the 74LVC1T45GS,132?
The device operates from -40 °C to +125 °C).
- Is the 74LVC1T45GS,132 RoHS compliant?
Yes, the device is RoHS compliant).
- What is the output drive capability of the 74LVC1T45GS,132?
The output drive capability is ± 24 mA).
- What is the propagation delay (tpd) of the 74LVC1T45GS,132?
The propagation delay is 2.5 ns).
- Does the 74LVCH1T45 variant have any additional features compared to the 74LVC1T45?
Yes, the 74LVCH1T45 variant includes active bus hold circuitry to hold unused or floating data inputs at a valid logic level).
