MAX3320ACAP Maxim Integrated Products, MAX3320ACAP Datasheet

MAX3320ACAP

Manufacturer Part Number

MAX3320ACAP

Description

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX3320ACAP.pdf (12 pages)

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Bonase Electronics (HK) Co., Limited

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The MAX3320 combines a microprocessor (µP) super-

visory circuit with an RS-232 transceiver. The power-on

reset performs a single function: it asserts a reset signal

whenever the V

set threshold, staying asserted for at least 100ms after

an active-low RESET output, which is guaranteed to be in

the correct state for V

tor is designed to ignore fast transients on V

thresholds suitable for operation with a variety of supply

voltages are available.

The MAX3320 transceivers have a proprietary low-

dropout transmitter output stage, enabling true RS-232

performance with a dual charge pump powered from a

+3V to +5.5V supply. The device requires only four

small 0.1µF external charge-pump capacitors, and is

guaranteed to run at data rates of up to 250kbps. It

comes in the space-saving 20-pin SSOP package.

________________________Applications

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 408-737-7600 ext. 3468.

19-1253; Rev 0; 8/97

_______________General Description

__________________Pin Configuration

TOP VIEW

3V to 5.5V, up to 250kbps True RS-232 Transceiver

rises above the reset threshold. The MAX3320 has

with 4µA AutoShutdown Plus and Power-On Reset

Palmtop Computers

Portable/Battery-Powered Equipment

Hand-Held Equipment

Peripherals

Printers

INVALID

R1OUT

R2OUT

RESET

T1IN

T2IN

C2+

C2-

V+

V-

________________________________________________________________ Maxim Integrated Products

supply voltage declines below a pre-

MAX3320

down to 1V. The reset compara-

MAXxxx

SSOP

C1+

C1-

GND

T1OUT

T2OUT

R1IN

R2IN

FORCEON

FORCEOFF

. Reset

* This part offers a choice of reset threshold voltage. From the

____________________________Features

Typical Operating Circuit appears at end of data sheet.

AutoShutdown Plus is a trademark of Maxim Integrated Products.

______________Ordering Information

MAX3320_CAP

MAX3320_EAP

table below, select the suffix corresponding to the desired

threshold and insert it into the blank to complete the part

number.

Precise Monitoring of 5V and 3.3V Power-

Supply Voltages:

— 100ms (min) Power-On RESET Pulse Width

— Power-Supply Transient Immunity

— Guaranteed RESET Valid to V

4µA Supply Current Achieved with

AutoShutdown Plus

Receivers Always Active

Power-On Reset Always Active

4µA Low-Power Shutdown

250kbps Guaranteed Data Rate

PART*

SUFFIX

TEMP. RANGE

-40°C to +85°C

0°C to +70°C

RESET THRESHOLD

20 SSOP

PIN-PACKAGE

4.25

2.85

4.63

3.08

(V)

= 1V

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