MAX3243EEUI+T

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MAX3243EEUI+T

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IC TRANSCEIVER FULL 3/5 28TSSOP

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Thông số kỹ thuật

thuộc tính Giá trị
Supplier Analog Devices Inc./Maxim Integrated
Package Tape & Reel (TR)
ProductStatus Active
Type Transceiver
Protocol RS232
NumberofDrivers/Receivers 3/5
Duplex Full
ReceiverHysteresis 300 mV
DataRate 120Kbps
Voltage-Supply 3V ~ 5.5V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 28-TSSOP (0.173, 4.40mm Width)

Tổng quan

Description

MAX3243EEUI+T is Maxim’s RS-232 transceiver (multi-channel) that lets a microcontroller or UART talk to RS-232 devices. It converts TTL/CMOS logic levels to RS-232 voltage levels and vice versa, using an on‑chip charge pump to generate the required RS‑232 voltages from a single supply. The device typically operates from a 3.3V–5V supply and requires external pump capacitors. It provides the necessary drivers and receivers for bidirectional RS-232 communication in one small package. The “E” denotes extended/industrial temperature range, “UI” is a package code, and “+T” indicates Tape & Reel packaging. This makes it suitable for harsh environments and automated assembly, while offering low power consumption for serial interfaces.

Equivalent

Equivalents (3-channel RS-232 transceivers) include:
- TI SN65C3243 (or SN75C3243)
- Renesas/Exar SP3243 (SP324x family)
These parts offer 3 drivers/3 receivers, operate from 3.0–5.5 V, and provide a similar RS-232 interface like MAX3243EEUI+T.

Features

Here are the key features of MAX3243EEUI+T (Quad RS-232 transceiver):
- Quad channel: 4 drivers and 4 receivers (4 TX, 4 RX)
- Single-supply operation: 3.0 V to 5.5 V
- On‑chip charge pump to generate RS‑232 levels (no external negative supply)
- Requires external charge-pump capacitors (typical four 0.1 µF capacitors)
- TTL/CMOS-compatible logic interface: T inputs and R outputs
- RS‑232 level outputs and RS‑232 input tolerance on receivers
- Independent channels for flexible point-to-point connections
- ESD protection on RS‑232 lines
- Low quiescent current and suitable for space/power‑conscious designs
- Industrial temperature options (depending on variant)
- Packaging: +T denotes Tape & Reel option
Notes: Exact data rates, allowable loads, and capacitor values can vary by device revision; consult the datasheet for precise specifications.

Pinout

- Pin count: 20 pins (20‑pin package, e.g., TSSOP/SSOP, MAX3243EEUI+T).
- Function: Quad RS-232 transceiver. Provides 4 Tx drivers and 4 Rx receivers to convert four UART TTL/CMOS signals to RS‑232 levels and back; includes an on‑chip charge pump to generate the RS‑232 voltages from a single supply (3.0–5.5 V).

Manufacturer

Manufacturer: Maxim Integrated.
What kind of company: An American semiconductor company that designs and markets analog and mixed-signal integrated circuits (fabless; outsources fabrication). It is now a subsidiary of Analog Devices.

Application

Quad RS-232 transceiver for TTL/CMOS to RS-232 conversion. Suitable for embedded systems and serial peripherals such as modems, PCs/terminals, data loggers, industrial controllers/PLCs, test equipment, POS terminals, printers, routers/switches, and RS-232 medical devices.

Package

It’s a 16-pin surface-mount package (SOIC-16). The “+T” suffix means Tape & Reel packaging.

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