MAX3320ACAP+T Maxim Integrated Products, MAX3320ACAP+T Datasheet

IC TXRX RS232 250KBPS 20-SSOP

MAX3320ACAP+T

Manufacturer Part Number
MAX3320ACAP+T
Description
IC TXRX RS232 250KBPS 20-SSOP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3320ACAP+T

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
V
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
CC
__________________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-
CC
V+
V-
________________________________________________________________ Maxim Integrated Products
10
supply voltage declines below a pre-
1
2
3
4
5
6
7
8
9
CC
MAX3320
down to 1V. The reset compara-
MAXxxx
SSOP
20
19
18
17
16
15
14
13
12
11
C1+
V
C1-
GND
T1OUT
T2OUT
R1IN
R2IN
FORCEON
FORCEOFF
CC
CC
. 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
A
B
L
T
TEMP. RANGE
-40°C to +85°C
0°C to +70°C
RESET THRESHOLD
CC
20 SSOP
20 SSOP
PIN-PACKAGE
4.25
2.85
4.63
3.08
(V)
= 1V
1

Related parts for MAX3320ACAP+T

MAX3320ACAP+T Summary of contents

Page 1

... CC 18 C1- 17 GND 16 T1OUT Typical Operating Circuit appears at end of data sheet. 15 T2OUT 14 R1IN 13 R2IN 12 FORCEON 11 FORCEOFF AutoShutdown Plus is a trademark of Maxim Integrated Products TEMP. RANGE PIN-PACKAGE 0°C to +70°C 20 SSOP -40°C to +85°C 20 SSOP RESET THRESHOLD SUFFIX (V) A 4.25 B 2. ...

Page 2

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset ABSOLUTE MAXIMUM RATINGS V .............................................................................-0. (Note 1) .................................................................-0. (Note 1)...................................................................0. ...

Page 3

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset ELECTRICAL CHARACTERISTICS (continued 5.5V, C1–C4 = 0.1µF (tested at 3.3V ±10%), C1 = 0.047µF, C2–C4 = 0.33µF (tested at 5V ...

Page 4

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset TIMING CHARACTERISTICS ( 5.5V, C1–C4 = 0.1µF, C1–C4 = 0.1µF (for 3.3V ±10%), C1 = 0.047µF, C2–C4 = 0.33µF (tested at ...

Page 5

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset ____________________________Typical Operating Characteristics (continued 3.3V, 250kbps data rate, C1–C4 = 0.1µF, all transmitters loaded with 3k . Typical values are at T ...

Page 6

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset Table 1. MAX3320 Output Control Truth Table FORCEOFF FORCEON Don’t Care * Time since ...

Page 7

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset reducing supply current to 4µA. This occurs if the RS-232 cable is disconnected or the connected peripheral trans- mitters turn off. The system turns ...

Page 8

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset * ** RECEIVER INPUTS VOLTAGE TRANSMITTER INPUTS VOLTAGE TRANSMITTER OUTPUTS VOLTAGE V INVALID CC OUTPUT 0 I NVL ...

Page 9

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset V CC MAX3320 V CC GND RESET Figure 4. Ensuring RESET Valid When using the minimum required capacitor values, make sure ...

Page 10

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset T1IN T1OUT R1IN R1OUT 2 s/div 1000pF LOAD Figure 7. Loop-Back Test ...

Page 11

True RS-232 Transceiver with 4µA AutoShutdown Plus and Power-On Reset ___________________________________________________Typical Operating Circuit +3. SYSTEM *C3 MAY BE RETURNED TO EITHER V CC ______________________________________________________________________________________ 0.1 F C1+ C1 0.1 ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1997 Maxim Integrated Products Printed USA ...

Related keywords