ADM202EARNZ Detailed explanation of pin function specifications and circuit principle instructions
The "ADM202EARNZ" is a part of Analog Devices' product lineup, specifically a RS-232 transceiver . It is designed for data communication, capable of converting signals between TTL and RS-232 levels. The specific model "ADM202EARNZ" has the following key characteristics:
Manufacturer: Analog Devices Package: This model comes in a 20-pin SOIC (Small Outline Integrated Circuit) package.The pinout and function of the pins for the ADM202EARNZ would be as follows:
Pinout and Pin Function List
Pin Number Pin Name Pin Function Description 1 VCC Supply voltage (+5V typical). 2 GND Ground pin. 3 T1IN Transmit data input (TTL logic level). 4 R1OUT Receive data output (RS-232 voltage level). 5 T2IN Transmit data input (TTL logic level). 6 R2OUT Receive data output (RS-232 voltage level). 7 T1OUT Transmit data output (RS-232 voltage level). 8 R1IN Receive data input (TTL logic level). 9 T2OUT Transmit data output (RS-232 voltage level). 10 R2IN Receive data input (TTL logic level). 11 CTS1 Clear To Send signal input (RS-232 level). 12 RTS1 Request To Send signal output (RS-232 level). 13 CTS2 Clear To Send signal input (RS-232 level). 14 RTS2 Request To Send signal output (RS-232 level). 15 DTR1 Data Terminal Ready output (RS-232 level). 16 DSR1 Data Set Ready input (RS-232 level). 17 DTR2 Data Terminal Ready output (RS-232 level). 18 DSR2 Data Set Ready input (RS-232 level). 19 RI1 Ring Indicator input (RS-232 level). 20 RI2 Ring Indicator input (RS-232 level).Pin Function Explanation:
VCC (Pin 1): The supply voltage pin. For this part, it requires a 5V power supply for proper operation. GND (Pin 2): Ground pin. Connect to the system's ground for a complete circuit. T1IN, T2IN (Pins 3, 5): These pins are used to send TTL logic-level data to the transceiver. R1OUT, R2OUT (Pins 4, 6): These pins provide the received data at RS-232 voltage levels, which are typically +12V (HIGH) and -12V (LOW) for the standard RS-232 protocol. T1OUT, T2OUT (Pins 7, 9): These are the RS-232 output pins for sending data at RS-232 levels from the device. R1IN, R2IN (Pins 8, 10): These receive TTL-level data and convert it into RS-232 levels. CTS1, CTS2 (Pins 11, 13): These are the Clear To Send (CTS) signals used for flow control in communication. They indicate whether the device can transmit data. RTS1, RTS2 (Pins 12, 14): These are the Request To Send (RTS) output signals used for flow control, signaling the availability of data. DTR1, DTR2 (Pins 15, 17): Data Terminal Ready pins, used to indicate that the terminal device is ready to communicate. DSR1, DSR2 (Pins 16, 18): Data Set Ready pins, which indicate that the connected device is ready for communication. RI1, RI2 (Pins 19, 20): Ring Indicator pins that signal an incoming call or notification.Frequently Asked Questions (FAQ)
What is the purpose of the ADM202EARNZ? The ADM202EARNZ is an RS-232 transceiver used for signal conversion between TTL/CMOS logic levels and RS-232 voltage levels. What is the operating voltage for the ADM202EARNZ? The ADM202EARNZ operates with a supply voltage of +5V (typical). How many pins does the ADM202EARNZ have? The ADM202EARNZ has 20 pins in the SOIC package. What is the function of the T1IN pin? T1IN (Pin 3) is the input pin where TTL logic-level data is sent to the transceiver for transmission. What does the R1OUT pin do? R1OUT (Pin 4) provides the received data output at RS-232 voltage levels. What is the difference between the T1IN and T2IN pins? T1IN and T2IN (Pins 3 and 5) are both transmit data input pins but correspond to different signal lines for different channels in the device. What is the function of the CTS1 pin? CTS1 (Pin 11) is the Clear To Send signal input, indicating that the device is ready to receive data. What does the DTR1 pin represent? DTR1 (Pin 15) is the Data Terminal Ready output, signaling that the terminal device is ready to communicate. How do I use the RTS1 and RTS2 pins? RTS1 and RTS2 (Pins 12 and 14) are the Request To Send signals that indicate whether the device is ready to transmit data.What type of device can use the ADM202EARNZ?
The ADM202EARNZ is ideal for use in data communication systems, especially for interfacing between TTL logic circuits and RS-232-based communication equipment.What is the pinout for receiving data on this part?
The receiving data input is connected to R1IN and R2IN (Pins 8 and 10), and the data is received as TTL-level signals.Can the ADM202EARNZ be used for full-duplex communication?
Yes, the ADM202EARNZ supports full-duplex communication, allowing data transmission and reception simultaneously.What is the role of the DSR1 pin?
DSR1 (Pin 16) is the Data Set Ready input, indicating that the connected device is ready to communicate.Can I use the ADM202EARNZ in industrial applications?
Yes, the ADM202EARNZ is suitable for industrial applications that require RS-232 communication interface s.Is there any protection on the input and output pins of the ADM202EARNZ?
The ADM202EARNZ has built-in protection to handle voltage spikes and prevent damage to the device.What is the temperature range for the ADM202EARNZ?
The typical operating temperature range is -40°C to +85°C.How does the ADM202EARNZ handle flow control?
The ADM202EARNZ supports flow control using the CTS, RTS, DSR, and DTR pins to manage data transmission.What is the significance of the RI1 and RI2 pins?
RI1 and RI2 (Pins 19 and 20) are the Ring Indicator inputs, used to signal an incoming call or notification.Can I use this device for low-speed serial communication?
Yes, the ADM202EARNZ can be used for low-speed serial communication, supporting standard RS-232 baud rates.Where can I find the full datasheet for the ADM202EARNZ?
You can find the full datasheet for the ADM202EARNZ on the Analog Devices website or by searching for the part number in a component distributor’s catalog.This detailed explanation covers the pinout, function, and usage of the ADM202EARNZ, as well as common FAQs.
