ADM213EARSZ-REEL is a serial interface transceiver mainly used to support serial communication standards such as RS-232 and RS-485.

The shutdown feature on the ADM213EARSZ-REEL disables the charge pump and all transmitters and receivers. On this device, the charge pump, all transmitters, and three of the five receivers are disabled. The remaining two receivers remain active, allowing peripheral devices to be monitored. This feature allows the device to shut down until the peripheral device starts communicating. The activity receiver can alert the processor, which can then take the ADM213E out of shutdown mode.

 

Ⅰ.Specifications of ADM213EARSZ-REEL

•Height:1.75 mm
•Length:10.2 mm
•Width:5.3 mm
•ESD protection:15 kV
•Duplex:Full Duplex
•Installation style:SMD/SMT
•Package/Case:SSOP-28
•Number of exciters:4 Driver
•Number of receivers:5 Receiver
•Minimum operating temperature:-40℃
•Maximum operating temperature:+85℃
•Supply voltage-Max:5.5 V
•Supply voltage-Minimum:4.5 V
•Operating power supply current:13 mA
•Power supply type:single power supply
•Operating power supply voltage:5 V
•Receiver hysteresis:650 mV
•Receiver signal type:single-ended
•Number of transceivers:1 Transceiver
•Product type:RS-232 interface integrated circuit

 

Ⅱ.Main functional features of ADM213EARSZ-REEL

 

1.Multi-channel support: ADM213EARSZ-REEL is a multi-channel RS-232/V.28 interface device that supports multiple channels for simultaneous serial communication. Multi-channel support can handle multiple serial communication channels simultaneously, enabling fast, stable, and reliable data transmission between multiple devices.

2.Power supply voltage range: The power supply voltage range supported by ADM213EARSZ-REEL is usually 4.5V to 5.5V, which enables it to work stably in different power environments.

3.Overvoltage and overcurrent protection: ADM213EARSZ-REEL has overvoltage and overcurrent protection functions, which helps improve its stability and reliability at work. Overvoltage protection means that when the power supply voltage exceeds the normal range, the device can automatically cut off the power supply or reduce the load to protect the circuit from damage. Overcurrent protection means that when the current exceeds the normal range, the device can automatically cut off the current or reduce the load to prevent circuit overheating or component damage caused by excessive current.

4.Low power consumption design: ADM213EARSZ-REEL is a serial communication device with low power consumption design, suitable for applications that require long-term operation. By adopting a low-power design, ADM213EARSZ-REEL can reduce energy consumption while ensuring performance, extend the running time of the device, and reduce reliance on limited energy sources such as batteries.

5.Pin protection: ADM213EARSZ-REEL provides pin protection to help prevent the chip from being damaged when connected or disconnected. The ADM213EARSZ-REEL's pin protection feature reduces the risk of potential damage caused by connections or disconnections. It usually adopts some physical or electrical protection mechanisms, such as increasing the mechanical strength of the pins, adding protection circuits to the pins, etc.

6.Internally integrated charge pump: The internally integrated charge pump of ADM213EARSZ-REEL can provide the required voltage level, thus simplifying external circuit design. Through the internal integrated charge pump, ADM213EARSZ-REEL can generate the required voltage without the need for external power supply, which makes the circuit design simpler, more reliable and more efficient. In addition, the internally integrated charge pump reduces energy consumption and reduces dependence on external power supplies, thereby extending equipment operation time.

 

Ⅲ.Application fields of ADM213EARSZ-REEL

 

•Internet equipment

•Switch

•Router

•Vehicle diagnostics

•Medical monitoring equipment

•Infotainment system

•Medical imaging equipment

•Desktop computer

•Printer

•Peripheral equipment

•Modem

•Laptop

 

Ⅳ.Connection Diagram of ADM213EARSZ-REEL

 

Ⅴ.Log Frequency of ADM213EARSZ-REEL(MHz)

 

Ⅵ.Circuit diagram of ADM213EARSZ-REEL

 

Ⅶ.Pin protection mechanism of ADM213EARSZ-REEL

1.Overcurrent protection: The overcurrent protection circuit prevents the pins of ADM213EARSZ-REEL from being damaged by excessive current. This protection helps keep the pin current within safe limits. In the ADM213EARSZ-REEL, the overcurrent protection circuit is implemented by monitoring the current of the pin. When the detected current exceeds the preset safety threshold, the overcurrent protection circuit triggers and takes appropriate measures to reduce the current or cut off the power supply to protect the pin from excessive current.

2.Overvoltage protection: In ADM213EARSZ-REEL, the overvoltage protection circuit is usually integrated with the power management unit. Overvoltage protection is very important to protect the pins and chip of the ADM213EARSZ-REEL. It prevents physical damage or performance degradation caused by excessive voltage, thereby extending the life of the chip.

3.Over-temperature protection: ADM213EARSZ-REEL also includes over-temperature protection function to prevent pin damage under high temperature conditions.

4.ESD (electrostatic discharge) protection: ADM213EARSZ-REE has an electrostatic discharge protection circuit to prevent damage caused by electrostatic discharge. This is critical to improving the durability of the chip.

Ⅷ.Working principle of ADM213EARSZ-REEL

1.ADM213EARSZ-REEL can support different serial communication standards, including RS-232 and RS-485. The two standards use different electrical characteristics and signal levels.

2.RS-485 communication: In RS-485, differential signals are usually used, that is, positive and negative signals are transmitted on two lines respectively to improve anti-interference capability and support long-distance communication.

3.RS-232 Communication: With RS-232, communication is achieved by sending and receiving signals with different voltages. A typical RS-232 signal switches between negative and positive levels.

4.Driver circuit: ADM213EARSZ-REEL contains a driver circuit that is responsible for converting logic levels from the MCU or processor into electrical signals that comply with serial communication standards. For RS-232, this might involve converting logic high levels to negative levels and logic low levels to positive levels. For RS-485, this may involve the implementation of differential driver circuits.

5.Power management: ADM213EARSZ-REEL also contains power management circuitry to ensure that the chip operates at the correct operating voltage. In the ADM213EARSZ-REEL, the power management circuit usually includes components such as voltage regulators, power switches, and voltage monitors. These components work together to ensure that the chip receives the appropriate power supply.

6.Receiving circuit: The receiving circuit of ADM213EARSZ-REEL is responsible for converting the received serial signal into a logic level that can be processed by the MCU or processor. This includes restoring logic high and low levels from RS-232 or RS-485 levels. The signal receiver is responsible for receiving the serial signal and inputting it into the level converter. The signal receiver has the appropriate sensitivity and bandwidth to properly receive and process the serial signal.

 

Ⅸ.Replacement model of ADM213EARSZ-REEL

•ST485
•SN75176
•MAX485
•MAX3232
•HIN211EIAZ
•ADM211EARSZ

Frequently Asked Questions

1.What is the typical data rate range supported by ADM213EARSZ-REEL?
The chip supports different data rates depending on the selected serial communication standard. For specific data rate information, refer to the datasheet.

2.What are the number of exciters and receivers of ADM213EARSZ-REEL?
ADM213EARSZ-REEL has two Transmitter and two Receiver.

3.Which serial communication standards does ADM213EARSZ-REEL support?
ADM213EARSZ-REEL supports multiple serial communication standards, including RS-232 and RS-485.