規格
| 屬性 | 價值 |
| Supplier | Rochester Electronics, LLC,Analog Devices Inc./Maxim Integrated |
| Package / Case | Tube,Tube |
| Part Status | Obsolete |
| Type | Transceiver |
| Protocol | RS232 |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Full |
| Receiver Hysteresis | 500 mV |
| Data Rate | 120Kbps |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
概述
Description
MAX202EEWE is a Maxim/Analog Devices dual RS-232 transceiver. It provides two drivers (TTL/CMOS to RS-232) and two receivers (RS-232 to TTL/CMOS) in a single device, enabling a microcontroller or FPGA to interface with RS-232 serial ports.
Key points:
- On-chip charge pump generates RS-232 voltage swings from a single supply (no external high-voltage supply needed).
- Typical supply range is around 3.0–5.5 V; external capacitors are required for the charge pump (per datasheet).
- Suitable for low-pin-count, low-power serial interfaces in embedded systems, PCs, modems, and industrial controllers.
- EEWE suffix indicates a specific package/temperature variant; check the exact datasheet for pinout, capacitor values, and electrical specs for your part.
For precise electrical characteristics, pinout, and capacitor values, refer to the MAX202EEWE datasheet.
Key points:
- On-chip charge pump generates RS-232 voltage swings from a single supply (no external high-voltage supply needed).
- Typical supply range is around 3.0–5.5 V; external capacitors are required for the charge pump (per datasheet).
- Suitable for low-pin-count, low-power serial interfaces in embedded systems, PCs, modems, and industrial controllers.
- EEWE suffix indicates a specific package/temperature variant; check the exact datasheet for pinout, capacitor values, and electrical specs for your part.
For precise electrical characteristics, pinout, and capacitor values, refer to the MAX202EEWE datasheet.
Equivalent
MAX202EEWE is a dual RS-232 transceiver with a charge pump. Common cross-references: Analog Devices ADM202/ADM232; STMicroelectronics ST232/ST3232; Renesas/Exar SP3222/SP3223; TI SN75C322; Maxim MAX3221/MAX3222. Choose by supply voltage (3.3V/5V) and package type.
Features
Key features of MAX202EEWE (dual RS-232 transceiver):
- 2 transmitters and 2 receivers (dual RS-232 transceiver)
- Single-supply operation: 4.5V–5.5V (5V typical)
- TTL/CMOS-compatible input levels; RS-232 level outputs
- Internal charge-pump voltage generator for RS-232 levels
- External capacitors required for the charge pump (typical values shown in datasheet)
- Extended temperature option: -40°C to +85°C
- Low quiescent current with protection features (short-circuit protection)
- 8-pin package (RoHS-compliant, EEWE suffix)
Note: For exact capacitor values and electrical characteristics, refer to the official MAX202EEWE datasheet.
- 2 transmitters and 2 receivers (dual RS-232 transceiver)
- Single-supply operation: 4.5V–5.5V (5V typical)
- TTL/CMOS-compatible input levels; RS-232 level outputs
- Internal charge-pump voltage generator for RS-232 levels
- External capacitors required for the charge pump (typical values shown in datasheet)
- Extended temperature option: -40°C to +85°C
- Low quiescent current with protection features (short-circuit protection)
- 8-pin package (RoHS-compliant, EEWE suffix)
Note: For exact capacitor values and electrical characteristics, refer to the official MAX202EEWE datasheet.
Pinout
- Pin count: 16 pins (SOIC-16/DIP-16 commonly used)
- Function: Dual RS-232 transceiver (two drivers, two receivers) that converts TTL/CMOS UART levels to RS-232 levels and vice versa, using an internal charge pump (requires external capacitors) to generate the ± voltages.
- Function: Dual RS-232 transceiver (two drivers, two receivers) that converts TTL/CMOS UART levels to RS-232 levels and vice versa, using an internal charge pump (requires external capacitors) to generate the ± voltages.
Manufacturer
- Manufacturer: Maxim Integrated (now a subsidiary of Analog Devices)
- What kind of company: American semiconductor company specializing in analog and mixed-signal integrated circuits.
- What kind of company: American semiconductor company specializing in analog and mixed-signal integrated circuits.
Application
MAX202EEWE is a dual RS-232 transceiver that converts TTL/CMOS UART levels to RS-232 levels (with internal charge pumps). Application areas include:
- Embedded systems and microcontroller serial interfaces
- Modems, routers, switches, and other network equipment
- POS terminals, printers, and cash registers
- Industrial instrumentation, data acquisition, and telemetry
- Debug/console ports on development boards and equipment
- Any device requiring a compact, low-pin RS-232 interface solution
- Embedded systems and microcontroller serial interfaces
- Modems, routers, switches, and other network equipment
- POS terminals, printers, and cash registers
- Industrial instrumentation, data acquisition, and telemetry
- Debug/console ports on development boards and equipment
- Any device requiring a compact, low-pin RS-232 interface solution
Package
8-pin SOIC (SOIC-8) surface-mount package.
