MAX3323EEPE+ Maxim Integrated Products, MAX3323EEPE+ Datasheet

IC TXRX RS232 250KBPS 16-DIP

MAX3323EEPE+

Manufacturer Part Number
MAX3323EEPE+
Description
IC TXRX RS232 250KBPS 16-DIP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX3323EEPE+

Number Of Drivers/receivers
1/1
Protocol
RS232
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Propagation Delay Time Ns
180 ns, 0.7 us
Operating Supply Voltage
3 V to 5 V
Supply Current
1 mA
Operating Temperature Range
- 40 C to + 85 C
Data Rate
250 Kbps
Mounting Style
Through Hole
Number Of I/os
1 / 1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3322E/MAX3323E 3.0V to 5.5V powered
EIA/TIA-232 and V.28/V.24 communications interfaces
are designed for multidrop applications with low power
requirements, high data-rate capabilities, and
enhanced electrostatic discharge (ESD) protection. All
RS-232 inputs and outputs are protected to ±15kV
using the IEC 1000-4-2 Air-Gap Discharge method,
±8kV using the IEC 1000-4-2 Contact Discharge
method, and ±15kV using the Human Body Model.
The MAX3322E/MAX3323E have pin-selectable
5kΩ/high-impedance RS-232 receivers. These devices
are capable of receiving data in high-impedance mode.
In multidrop applications, one receiver has a 5kΩ input
resistance, while the other receivers are high imped-
ance to ensure the RS-232 standard is observed. Logic
control permits selection of the functional mode: high
impedance or RS-232 standard load. The transmitters
are enabled by logic control to allow the multiplexing of
the inputs to a single UART.
A proprietary low-dropout transmitter output stage
enables true RS-232 performance from a 3.0V to 5.5V
supply with a dual charge pump. The charge pump
requires only four small 0.1µF capacitors for operation
from a 3.3V supply. The MAX3322E/MAX3323E are
capable of running at data rates up to 250kbps while
maintaining RS-232-compliant output levels. The
MAX3322E/MAX3323E have a unique V
operation in mixed-logic voltage systems. Both input
and output logic levels are pin programmable through
the V
The MAX3322E is a 2Tx/2Rx device for hardware hand-
shaking in standard RS-232 mode, and the MAX3323E
is a 1Tx/1Rx, required in most multidrop applications.
The MAX3322E is offered in a space-saving TSSOP
package. The MAX3323E is offered in 16-pin DIP and
space-saving TSSOP packages.
19-2667; Rev 1; 1/03
Typical Operating Circuit and Functional Diagram appear
at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
±15kV ESD-Protected, RS-232 Transceivers for
L
Bar-Code Scanners
Video Security
Industrial Data Acquisition
Data Splitters
pin.
________________________________________________________________ Maxim Integrated Products
General Description
Applications
L
pin that allows
o Pin-Selectable 5kΩ/High-Impedance Receivers
o Transmitter Outputs Three-Stated by Logic
o V
o 1Tx/1Rx (MAX3323E) or 2Tx/2Rx (MAX3322E)
o 250kbps Data Rate
o 1µA Low-Power Shutdown
o High ESD Protection for RS-232 I/O Pins
Multidrop Applications
MAX3322E EUP
MAX3323E EUE
MAX3323EEPE
Pin Configurations continued at end of data sheet.
Control
Systems
Versions
TOP VIEW
L
±15kV—Human Body Model
±8kV—IEC 1000-4-2 Contact Discharge
±15kV—IEC 1000-4-2 Air-Gap Discharge
Pin for Compatibility with Mixed Voltage
PART
TOUT2
TOUT1
RIN2
RIN1
C1+
C2+
C1-
C2-
V+
V-
10
1
2
3
4
5
6
7
8
9
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
MAX3322E
TSSOP
Pin Configurations
20
19
18
17
16
15
14
13
12
11
V
GND
SHDN
V
RENABLE
TXENABLE
TIN2
ROUT2
TIN1
ROUT1
CC
L
Features
PIN-PACKAGE
20 TSSOP
16 TSSOP
16 DIP
1

Related parts for MAX3323EEPE+

MAX3323EEPE+ Summary of contents

Page 1

... Industrial Data Acquisition Data Splitters Typical Operating Circuit and Functional Diagram appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Multidrop Applications o Pin-Selectable 5kΩ/High-Impedance Receivers ...

Page 2

ESD-Protected, RS-232 Transceivers for Multidrop Applications ABSOLUTE MAXIMUM RATINGS All Voltages Referenced to GND ....................................................................-0. (Note 1) ....................................................(V V- (Note 1) ................................................................+0. |V-| (Note 1) .................................................................+13V Input ...

Page 3

ESD-Protected, RS-232 Transceivers for DC ELECTRICAL CHARACTERISTICS (continued 3.0V to 5.5V 1.65V to 5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10 0.047µ 0.33µF, tested at +5V CC ...

Page 4

ESD-Protected, RS-232 Transceivers for Multidrop Applications (V = 3.3V 3.3V, C1–C4 = 0.1µ TRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE 7.5 5.0 DATA RATE = 250kbps LOAD = 3kΩ IN PARALLEL WITH C 2.5 0 ...

Page 5

ESD-Protected, RS-232 Transceivers for PIN NAME MAX3322E MAX3323E TOUT_ RIN_ 11 ROUT_ 12, ...

Page 6

ESD-Protected, RS-232 Transceivers for Multidrop Applications +3V INPUT 0V OUTPUT t PLH Figure 1. Transmitter Propagation-Delay Timing POWER- MANAGEMENT SHDN UNIT OR KEYBOARD CONTROLLER I/O CHIP POWER SUPPLY MAX3322E I/O CHIP WITH UART CPU Figure ...

Page 7

ESD-Protected, RS-232 Transceivers for Table 1. Tx/Rx Logic SHDN TXENABLE RENABLE 5V/div 2V/div V = 3.3V CC C1–C4 = 0.1µF 50µs/div Figure 4. ...

Page 8

ESD-Protected, RS-232 Transceivers for Multidrop Applications 1MΩ 1.5kΩ DISCHARGE CHARGE-CURRENT- RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 5. Human Body ESD Test Model The IEC 1000-4-2 standard covers ESD ...

Page 9

ESD-Protected, RS-232 Transceivers for on the transmitter outputs and slightly reduces power consumption. The values of C2, C3, and C4 can be increased without changing C1’s value. However, do not increase C1’s value without also increasing the val- ues ...

Page 10

ESD-Protected, RS-232 Transceivers for Multidrop Applications +3.3V 0.1µF SHDN C1+ C1 0.1µF C1- 3 MAX3323E 4 C2+ C2 0.1µF 5 C2- T_IN T_OUT R_OUT R_IN GND Figure 10. Loopback Test Circuit Power-Supply Decoupling In most circumstances, ...

Page 11

ESD-Protected, RS-232 Transceivers for Typical Operating Circuit +3. SHDN C1+ C1 0.1µF C1- 3 MAX3322E 4 C2+ C2 0.1µF 5 C2- T1OUT 12 T1IN TTL/CMOS T2OUT INPUTS 14 T2IN 15 TXENABLE ENABLE 16 CONTROL ...

Page 12

ESD-Protected, RS-232 Transceivers for Multidrop Applications (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 12 ______________________________________________________________________________________ Package Information ...

Page 13

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2003 Maxim Integrated Products ...

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