ICL3221EM集成電路（IC）的驅(qū)動(dòng)器接收器收發(fā)器規(guī)格書PDF中文資料

The Intersil ICL3221EM devices are 3.0V powered RS-232

transmitters/receivers which meet ElA/TIA-232 and

V.28/V.24 specifications. Additionally, they provide ±15kV

ESD protection (IEC61000-4-2 Air Gap and Human Body

Model) on transmitter outputs and receiver inputs (RS-232

pins). Targeted applications are PDAs, Palmtops, and

notebook and laptop computers where the low operational,

and even lower standby, power consumption is critical.

Efficient on-chip charge pumps, coupled with manual and

automatic power-down functions, reduce the standby

supply current to a 1μA trickle. Small footprint packaging,

and the use of small, low value capacitors ensure board

space savings as well. Data rates greater than 250kbps are

guaranteed at worst case load conditions. The device is fully

compatible with 3.3V-only systems.

The ICL3221EM features an automatic power-down

function which powers down the on-chip power-supply

and driver circuits. This occurs when an attached

peripheral device is shut off or the RS-232 cable is

removed, conserving system power automatically

without changes to the hardware or operating system.

These devices power up again when a valid RS-232

voltage is applied to any receiver input.

Table 1 summarizes the features of the ICL3221EM.

Features

? ESD Protection for RS-232 I/O Pins to ±15kV

(IEC61000)

? Drop in Replacement for MAX3221E

? RS-232 Compatible with VCC = 2.7V

? Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V

? Latch-Up Free

? On-Chip Voltage Converters Require Only Four External

0.1μF Capacitors

? Manual and Automatic Power-down Features

? Receiver Hysteresis For Improved Noise Immunity

? Guaranteed Minimum Data Rate . . . . . . . . 250kbps

? Power Supply Range. . . . . . . Single +3.0V to +3.6V

? Low Supply Current in Power-down State . . . . . . 1μA

? Pb-Free (RoHS Compliant)

Applications

? Any System Requiring RS-232 Communication Ports

- Battery Powered, Hand-Held, and Portable

Equipment

- Laptop Computers, Notebooks, Palmtops

- Modems, Printers and other Peripherals

- Digital Cameras

- Cellular/Mobile Phones