規格
| 屬性 | 價值 |
| Supplier | Analog Devices Inc./Maxim Integrated |
| Package | Tape & Reel (TR) |
| ProductStatus | Obsolete |
| Type | Transceiver |
| Protocol | RS232 |
| NumberofDrivers/Receivers | 5/3 |
| Duplex | Full |
| ReceiverHysteresis | 300 mV |
| DataRate | 250kbps |
| Voltage-Supply | 3V ~ 5.5V |
| OperatingTemperature | 0°C ~ 70°C |
| MountingType | Surface Mount |
| Package/Case | 28-SSOP (0.209, 5.30mm Width) |
概述
Description
MAX3237CAI+T is a Maxim RS-232 transceiver pair containing two drivers and two receivers. It translates between TTL/CMOS logic levels and RS-232 voltage levels, enabling full-duplex serial links from a single supply. It typically operates from 3 V to 5.5 V and uses an on‑chip charge pump to generate the RS-232 voltages, so no separate RS-232 power rail is needed. The device interfaces directly with microcontrollers or hosts, providing TTL/CMOS inputs and RS-232 outputs. It requires external charge‑pump capacitors (typical values given in the datasheet). The CAI package code identifies the package type, and +T denotes taped-and-reel packaging for automated assembly. Common applications include MCU-to-PC/modem connections and other embedded serial interfaces. For exact electrical specs, capacitor values, and ordering information, refer to the latest MAX3237CAI+T datasheet.
Features
Here are the typical features of the MAX3237CAI+T:
- 3-channel RS-232 transceiver: 3 drivers and 3 receivers
- Single-supply operation: 3.0 V to 5.5 V
- External charge-pump capacitors required (for RS-232 level generation)
- Converts TTL/CMOS inputs to RS-232 voltage levels and RS-232 inputs to TTL/CMOS outputs
- TTL/CMOS-compatible inputs with true RS-232-level outputs; 3-state capability
- ESD protection on RS-232 lines
- Low-power operation with power-down/shutdown mode
- Industrial temperature range: typically -40°C to +85°C (CAI+T version)
- Small 16-pin package (typical for this family)
Note: exact capacitor values and timing specifics may vary by variant; consult the datasheet for full electrical characteristics.
- 3-channel RS-232 transceiver: 3 drivers and 3 receivers
- Single-supply operation: 3.0 V to 5.5 V
- External charge-pump capacitors required (for RS-232 level generation)
- Converts TTL/CMOS inputs to RS-232 voltage levels and RS-232 inputs to TTL/CMOS outputs
- TTL/CMOS-compatible inputs with true RS-232-level outputs; 3-state capability
- ESD protection on RS-232 lines
- Low-power operation with power-down/shutdown mode
- Industrial temperature range: typically -40°C to +85°C (CAI+T version)
- Small 16-pin package (typical for this family)
Note: exact capacitor values and timing specifics may vary by variant; consult the datasheet for full electrical characteristics.
Pinout
- Pin count: 16 pins
- Function: Dual RS-232 transceiver (two drivers and two receivers). It converts TTL/CMOS logic levels to RS-232 levels and vice versa, using an external charge-pump capacitor set to generate the RS-232 voltages.
- Function: Dual RS-232 transceiver (two drivers and two receivers). It converts TTL/CMOS logic levels to RS-232 levels and vice versa, using an external charge-pump capacitor set to generate the RS-232 voltages.
Manufacturer
Manufacturer: Maxim Integrated (now part of Analog Devices).
What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and interface integrated circuits for applications in communications, consumer electronics, automotive, and industrial markets.
What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and interface integrated circuits for applications in communications, consumer electronics, automotive, and industrial markets.
Application
Typical application areas of MAX3237CAI+T (RS-232 transceiver):
- Connecting microcontrollers/ASICs to RS-232 devices by converting TTL/CMOS UART levels to RS-232 levels
- Serial interfaces for PCs, laptops, modems, printers, test equipment, and terminal servers
- Industrial automation and data-acquisition systems (PLC I/O, instrumentation, sensors)
- Networking equipment with console ports on routers/switches and telecom gear
- Point-of-sale terminals, ATM peripherals, and laboratory/medical instrumentation
- Any system requiring compact, low-power RS-232 transceivers
- Connecting microcontrollers/ASICs to RS-232 devices by converting TTL/CMOS UART levels to RS-232 levels
- Serial interfaces for PCs, laptops, modems, printers, test equipment, and terminal servers
- Industrial automation and data-acquisition systems (PLC I/O, instrumentation, sensors)
- Networking equipment with console ports on routers/switches and telecom gear
- Point-of-sale terminals, ATM peripherals, and laboratory/medical instrumentation
- Any system requiring compact, low-power RS-232 transceivers
Package
MAX3237CAI+T comes in a 16-pin Small Outline Integrated Circuit (SOIC) package; the “+T” indicates Tape & Reel packaging.
