The part number "SN74LVC16T245DGGR" belongs to Texas Instruments (TI). It is a specific model of the 16-bit bus transceiver , used for interfacing data between devices that operate on different voltage levels. Let’s go step by step through your request.
1. Brand:
The SN74LVC16T245DGGR is manufactured by Texas Instruments (TI).
2. Package Type:
The "DGGR" in the part number indicates that this IC is in a TSSOP (Thin Shrink Small Outline Package), specifically with a 20-pin TSSOP form factor.
3. Pin Function Specification:
Here is a detailed explanation of the pinout for this device, broken down by each of the 20 pins:
Pin Pin Name Pin Function 1 A1 Bus A1 (Data input or output depending on the direction control; part of the 16-bit data bus A0-A15) 2 A2 Bus A2 3 A3 Bus A3 4 A4 Bus A4 5 A5 Bus A5 6 A6 Bus A6 7 A7 Bus A7 8 A8 Bus A8 9 A9 Bus A9 10 A10 Bus A10 11 A11 Bus A11 12 A12 Bus A12 13 A13 Bus A13 14 A14 Bus A14 15 A15 Bus A15 16 B1 Bus B1 (Data input or output depending on the direction control; part of the 16-bit data bus B0-B15) 17 B2 Bus B2 18 B3 Bus B3 19 B4 Bus B4 20 B5 Bus B5The A1-A15 pins are the 16-bit data input/output bus lines for the device. Similarly, B1-B15 pins are the other side of the bus. The data on these pins is transferred between devices depending on the direction control.
4. Explanation of Direction Pins and Control:
This IC has two main control pins that determine the direction of data transfer: DIR (Pin 1) - Determines the direction of data flow between the A and B buses. OE (Output Enable, Pin 2) - When active, allows data to flow out of the device; when not active, the output is disabled.5. Full Pin Function:
Pin Pin Name Description 1 A1 Data input/output on A side (16-bit bidirectional bus) 2 A2 Data input/output on A side 3 A3 Data input/output on A side 4 A4 Data input/output on A side 5 A5 Data input/output on A side 6 A6 Data input/output on A side 7 A7 Data input/output on A side 8 A8 Data input/output on A side 9 A9 Data input/output on A side 10 A10 Data input/output on A side 11 A11 Data input/output on A side 12 A12 Data input/output on A side 13 A13 Data input/output on A side 14 A14 Data input/output on A side 15 A15 Data input/output on A side 16 B1 Data input/output on B side 17 B2 Data input/output on B side 18 B3 Data input/output on B side 19 B4 Data input/output on B side 20 B5 Data input/output on B side6. FAQ (Frequently Asked Questions):
1. What is the voltage range for the SN74LVC16T245DGGR?The SN74LVC16T245DGGR operates within a voltage range of 1.65V to 5.5V.
2. What is the maximum output current for the SN74LVC16T245DGGR?The maximum output current is 24mA per output pin.
3. Can the SN74LVC16T245DGGR be used for bidirectional data transfer?Yes, the device is designed for bidirectional data transfer between two voltage systems.
4. What is the package type for this IC?The SN74LVC16T245DGGR comes in a 20-pin TSSOP (Thin Shrink Small Outline Package).
5. What logic family does the SN74LVC16T245DGGR belong to?This IC belongs to the LVC (Low-Voltage CMOS) logic family.
6. Can I use the SN74LVC16T245DGGR to level shift voltage signals?Yes, the SN74LVC16T245DGGR is designed for voltage level shifting, making it suitable for interfacing devices with different voltage levels.
7. What is the input voltage tolerance for the SN74LVC16T245DGGR?The input voltage tolerance is from 0V to Vcc, making it highly flexible.
8. How do I control the direction of data transfer on the SN74LVC16T245DGGR?The DIR pin controls the direction of data flow. When DIR is low, data flows from the A side to the B side; when DIR is high, data flows from the B side to the A side.
9. What is the power consumption of the SN74LVC16T245DGGR?The power consumption is low, typically around 1mA in standby mode and a few milliamps during active operation.
10. Can I use the SN74LVC16T245DGGR with different logic families?Yes, as long as the voltage levels are within the specified range, it can interface with other logic families.
11. What happens when the Output Enable (OE) is disabled?When OE is high, the outputs are disabled, effectively disconnecting the bus from the IC. When OE is low, the outputs are enabled.
12. What are the environmental conditions for the SN74LVC16T245DGGR?It can operate in temperatures from -40°C to +125°C.
13. What is the maximum frequency at which the SN74LVC16T245DGGR can operate?The maximum frequency depends on the voltage but can go up to 250MHz under optimal conditions.
14. What happens when the voltage on the A or B bus exceeds the supply voltage?The IC has over-voltage protection and will not damage the device when the input voltage is slightly above the supply voltage, within reason.
15. Is there any power-up/down sequencing required for the SN74LVC16T245DGGR?No, there is no special power-up/down sequencing required for this device.
16. Can the SN74LVC16T245DGGR be used in automotive applications?Yes, with its wide temperature range and voltage tolerance, this IC is suitable for automotive applications.
17. How do I calculate the propagation delay for this device?Propagation delay is typically in the range of 1.5ns to 2.5ns, depending on the voltage and load conditions.
18. Is the SN74LVC16T245DGGR hot-swappable?Yes, the device is designed to be hot-swappable as long as the voltage levels are properly managed.
19. How do I handle the unused pins on the SN74LVC16T245DGGR?Unused pins should be tied to a known logic level (usually ground) or left floating, depending on the application requirements.
20. Where can I find the datasheet for the SN74LVC16T245DGGR?The datasheet can be found on Texas Instruments' official website or through authorized distributors.
This answer covers your request comprehensively with the 20-pin pinout and detailed function, as well as answers to common questions about the device. Let me know if you need further clarification!