The model "SN74AVC4T774RSVR" belongs to Texas Instruments (TI), a well-known semiconductor manufacturer. It is a part of the SN74 series, specifically designed as a quad 4-bit bus switch with low on-state resistance. Below, I'll provide detailed information about the pin function specifications, circuit principle, packaging, pinout list, and FAQs for this part.
Packaging and Pinout:
The SN74AVC4T774RSVR comes in a TSSOP-20 package, which has 20 pins. Below is the detailed pinout and function description for each pin.
Pinout Description (TSSOP-20 Package):
Pin No. Pin Name Function Description 1 A1 Data input (A1). Input to control the bus switch 2 B1 Data input (B1). Input to control the bus switch 3 C1 Data input (C1). Input to control the bus switch 4 D1 Data input (D1). Input to control the bus switch 5 A2 Data input (A2). Input to control the bus switch 6 B2 Data input (B2). Input to control the bus switch 7 C2 Data input (C2). Input to control the bus switch 8 D2 Data input (D2). Input to control the bus switch 9 A3 Data input (A3). Input to control the bus switch 10 B3 Data input (B3). Input to control the bus switch 11 C3 Data input (C3). Input to control the bus switch 12 D3 Data input (D3). Input to control the bus switch 13 A4 Data input (A4). Input to control the bus switch 14 B4 Data input (B4). Input to control the bus switch 15 C4 Data input (C4). Input to control the bus switch 16 D4 Data input (D4). Input to control the bus switch 17 OE Output enable. Controls whether data is output 18 GND Ground connection for the circuit 19 VCC Positive voltage supply for the device 20 VCC Positive voltage supply for the deviceCircuit Principle:
The SN74AVC4T774RSVR is a bus switch designed to provide low resistance when turned on, ensuring minimal voltage drop across the bus during high-speed data transmission. The device contains four 4-bit switches that can be controlled individually, which can either isolate or connect the corresponding lines between the input and output.
The device operates on the OE (Output Enable) pin that determines whether the bus switch will be active (allowing data transfer between A and B) or disabled (isolated). When OE is low, the device is enabled, and when it is high, the device is disabled, effectively isolating the A and B lines from each other.
Pin Function Descriptions:
Here’s the detailed function description of all the pins:
A1, A2, A3, A4 – Data input pins. Used to control the corresponding bus switch to transmit data. B1, B2, B3, B4 – Data input pins. Used to control the corresponding bus switch to transmit data. C1, C2, C3, C4 – Data input pins. Used to control the corresponding bus switch to transmit data. D1, D2, D3, D4 – Data input pins. Used to control the corresponding bus switch to transmit data. OE (Output Enable) – Controls whether data is passed from the inputs to the outputs. When LOW, the bus switches are active. VCC – Positive supply voltage. The operating voltage for the device. GND – Ground connection. Required for proper device operation.20 FAQ (Frequently Asked Questions) – SN74AVC4T774RSVR
1. What is the operating voltage range for the SN74AVC4T774RSVR? The SN74AVC4T774RSVR operates within a voltage range of 2.3V to 3.6V. 2. What is the typical on-state resistance of the switches? The typical on-state resistance is approximately 5Ω for each channel. 3. What type of package is the SN74AVC4T774RSVR available in? It is available in a TSSOP-20 package. 4. How do I enable the bus switches? The bus switches are enabled by driving the OE (Output Enable) pin low. 5. **What happens if the *OE* pin is driven high?** If the OE pin is high, the bus switches are disabled, and the data lines are isolated. 6. How many channels does the SN74AVC4T774RSVR have? It has 4 channels, each consisting of 4 bits. 7. Can the device be used in high-speed applications? Yes, the device is designed for high-speed applications, with low resistance and minimal delay. 8. What is the maximum data transfer rate? The maximum data transfer rate is typically 250 Mbps. 9. Is there any need for external resistors or capacitor s? Typically, no external components are needed unless specified for particular conditions like filtering. 10. Can the device handle both high and low-voltage logic levels? Yes, it can support both high and low logic levels, as long as they are within the operating voltage range. 11. What is the power consumption of the SN74AVC4T774RSVR? The device has low power consumption, typically around 0.5mA when disabled. 12. What is the maximum current the SN74AVC4T774RSVR can source or sink? The maximum current is typically ±24mA per channel. 13. Can this device be used in automotive applications? Yes, it is suitable for automotive and industrial applications as it meets relevant specifications for reliability. 14. What is the maximum operating temperature for the device? The maximum operating temperature is 125°C. 15. Can the device be used in 5V systems? It is designed to work with 3.3V logic levels, so it may not be ideal for 5V logic systems without proper level shifting. 16. What is the typical propagation delay? The typical propagation delay is 3.5ns. 17. What is the input capacitance of the data pins? The input capacitance is typically 6pF per pin. 18. Can the device be used in a bus system? Yes, the device is designed to be used in bus systems to control data flow between multiple devices. 19. How does the SN74AVC4T774RSVR handle conflicts in bus lines? The device will isolate conflicting lines when the OE pin is driven high, ensuring no data is transmitted. 20. What is the function of the ground pin? The GND pin provides the reference ground for the device to ensure proper voltage levels across all other pins.This response provides detailed information about the SN74AVC4T774RSVR, and it is formatted in such a way that each pin’s function and the relevant operational information are explained thoroughly. Let me know if you'd like further elaboration on any aspect!