SN74LV1T125DBVR Detailed explanation of pin function specifications and circuit principle instructions

The part number "SN74LV1T125DBVR" corresponds to a component from Texas Instruments, specifically from their SN74LV1T125 series of logic buffers.

Overview of the Part Number:

SN74: This prefix refers to the product series. It’s common for logic devices from Texas Instruments. LV1T: Indicates this is a low-voltage, single buffer, and operates at logic levels. 125: This typically refers to a 3-state buffer or line driver/receiver. DBVR: The suffix denotes the packaging type and the specific conditions for the part. DBVR refers to the package type and tape/reel format used for this part.

Pin Functions and Pinout Table for SN74LV1T125DBVR:

This device is housed in a SOT-23 package, a small-outline transistor package, commonly used for surface-mount applications.

The SN74LV1T125DBVR has a 5-pin configuration. Here is the detailed pinout:

Pin # Pin Name Pin Function Description 1 A Input (A) – Logic input to the buffer 2 GND Ground (GND) – Reference ground for the device 3 OE Output Enable (OE) – Active low enables the output, disables high 4 Y Output (Y) – The buffer's output which drives the signal 5 VCC Power Supply (VCC) – The device's positive power supply voltage

Detailed Functionality of Each Pin:

Pin 1: A (Input) This pin is where the input signal is applied to the device. The voltage level at this pin determines the output level at pin 4 (Y), provided the output enable (OE) pin is active low. Pin 2: GND (Ground) This pin connects to the system ground. It provides the reference voltage for the logic operations in the device. Pin 3: OE (Output Enable) The output enable pin controls whether the output at pin 4 (Y) is actively driving a signal or is in a high-impedance state. When this pin is low, the output at Y is enabled and follows the input A. When OE is high, the output goes into a high-impedance state, effectively disconnecting the output from the circuit. Pin 4: Y (Output) The output pin reflects the input signal at pin 1 (A) if OE is low. The output is driven according to the logic level at A. If OE is high, this output is high-impedance (essentially disconnected from the circuit). Pin 5: VCC (Power Supply) The device requires a power supply at this pin, typically between 2V to 5.5V depending on the operating conditions. This pin powers the internal circuits of the buffer.

Packaging and Pinout Summary:

Package Type: SOT-23 Number of Pins: 5 Package Dimensions: Length: 2.90 mm Width: 1.60 mm Height: 1.10 mm Mounting Type: Surface Mount (SMT)

20 FAQ for the SN74LV1T125DBVR:

Q1: What is the SN74LV1T125DBVR part number used for? A1: The SN74LV1T125DBVR is a low-voltage logic buffer used to interface digital circuits. It can drive or receive signals at logic level voltages.

Q2: What is the supply voltage range for SN74LV1T125DBVR? A2: The operating supply voltage range is between 2.0V and 5.5V.

Q3: How many pins does the SN74LV1T125DBVR have? A3: The SN74LV1T125DBVR has 5 pins.

Q4: What is the logic family of the SN74LV1T125DBVR? A4: It belongs to the LVTTL (Low Voltage Transistor-Transistor Logic) logic family.

Q5: What is the typical current consumption of the SN74LV1T125DBVR? A5: The typical quiescent current (Icc) is about 1 µA in the disabled state.

Q6: How does the OE (Output Enable) pin function? A6: The OE pin controls whether the output is enabled or in a high-impedance state. When low, the output is active; when high, the output is disconnected.

Q7: What is the maximum output drive current for SN74LV1T125DBVR? A7: The maximum output drive current is typically 24 mA for high and low states.

Q8: Can the SN74LV1T125DBVR be used in high-speed circuits? A8: Yes, the SN74LV1T125DBVR can operate at speeds up to 125 MHz at Vcc = 5V.

Q9: Is the SN74LV1T125DBVR a single or dual buffer? A9: The SN74LV1T125DBVR is a single buffer IC with a single input and output.

Q10: What type of package does the SN74LV1T125DBVR come in? A10: The SN74LV1T125DBVR comes in a 5-pin SOT-23 surface-mount package.

Q11: What is the logic level of the input (A) for SN74LV1T125DBVR? A11: The input (A) operates at TTL/CMOS logic levels, with a minimum input high voltage (VIH) of 2V.

Q12: What is the recommended operating temperature range for this device? A12: The recommended operating temperature range for the SN74LV1T125DBVR is -40°C to +85°C.

Q13: What is the maximum propagation delay for SN74LV1T125DBVR? A13: The maximum propagation delay for the SN74LV1T125DBVR is typically 10 ns at 5V.

Q14: How is the SN74LV1T125DBVR rated for ESD protection? A14: The device has built-in ESD protection to withstand up to 2 kV on the pins.

Q15: Can the SN74LV1T125DBVR be used in both high and low-speed circuits? A15: Yes, the SN74LV1T125DBVR is suitable for both high-speed and low-speed applications due to its flexibility in voltage and logic level compatibility.

Q16: How can the SN74LV1T125DBVR be powered? A16: It can be powered using a supply voltage (VCC) between 2V and 5.5V.

Q17: Is the SN74LV1T125DBVR suitable for automotive applications? A17: It can be used in automotive applications, provided the operating temperature is within the specified range and the device is used within its electrical ratings.

Q18: How should the SN74LV1T125DBVR be stored? A18: The SN74LV1T125DBVR should be stored in a dry environment with temperatures between -40°C and +85°C, and should be used within the time limits specified in the datasheet.

Q19: What is the maximum operating voltage for SN74LV1T125DBVR? A19: The maximum operating voltage is 5.5V.

Q20: What is the output state when OE is high? A20: When the OE pin is high, the output Y is in a high-impedance state and does not affect the circuit.

This detailed explanation covers all necessary aspects of the device, from pinout to functionality, packaging, and typical FAQs.