MAX3237EIPWR屬于集成電路（IC）的驅(qū)動器接收器收發(fā)器。由美國德州儀器公司制造生產(chǎn)的MAX3237EIPWR驅(qū)動器，接收器，收發(fā)器該系列產(chǎn)品的主要功能是提供必需的硬件資源，以通過延長電纜或印制線進(jìn)行通信。確切的功能會因所采用的通信協(xié)議而異，可能包括諸如瞬態(tài)抑制之類的功能，這些功能對于通信用途可能并非絕對必要，但對于可能的使用環(huán)境卻是明智之選。

FEATURES

? Meets or Exceeds the Requirements of

TIA/EIA-232-F and ITU v.28 Standards

? Operates With 3-V to 5.5-V VCC Supply

? Operates From 250 kbits/s to 1 Mbit/s

? Low Standby Current . . . 1 mA Typical

? External Capacitors . . . 4 × 0.1 mF

? Accepts 5-V Logic Input With 3.3-V Supply

? Designed to Be Interchangeable With Maxim

MAX3237E

? Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

? ESD Protection for RS-232 I/O Pins

– ±15 kV – Human-Body Model (HBM)

– ±8 kV – IEC61000-4-2, Contact Discharge

– ±15 kV – IEC61000-4-2, Air-Gap Discharge

APPLICATIONS

? Battery-Powered, Hand-Held, and Portable

Equipment

? PDAs and Palmtop PCs

? Notebooks, Sub-Notebooks, and Laptops

? Digital Cameras

? Mobile Phones and Wireless Devices

DESCRIPTION

The MAX3237E consists of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV

ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements of

TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and the

serial-port connector. The charge pump and four small external capacitors allow operation from a single 3-V to

5.5-V supply. This device operates at data signaling rates of 250 kbit/s in normal operating mode

(MBAUD = GND) and 1Mbit/s when MBAUD = VCC. The driver output slew rate is a maximum of 30 V/ms.

The MAX3237E transmitters are disabled and the outputs are forced into high-impedance state when the device

is in shutdown mode (SHDN = GND) and the supply current falls to less than 1 mA. Also, during shutdown, the

onboard charge pump is disabled; V+ is lowered to VCC, and V– is raised toward GND. Receiver outputs also

can be placed in the high-impedance state by setting enable (EN) high. ROUT1B remains active all the time,

regardless of the EN and SHDN condition.

The MAX3237EC is characterized for operation from 0°C to 70°C. The MAX3237EI is characterized for operation

from –40°C to 85°C.