MAX218EAP+ Maxim Integrated Products, MAX218EAP+ Datasheet

IC TXRX RS-232 DUAL 20-SSOP

MAX218EAP+

Manufacturer Part Number
MAX218EAP+
Description
IC TXRX RS-232 DUAL 20-SSOP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet

Specifications of MAX218EAP+

Number Of Drivers/receivers
2/2
Protocol
RS232
Voltage - Supply
1.8 V ~ 4.25 V
Mounting Type
Surface Mount
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX218 RS-232 transceiver is intended for battery-
powered EIA/TIA-232E and V.28/V.24 communications
interfaces that need two drivers and two receivers with
minimum power consumption. It provides a wide +1.8V
to +4.25V operating voltage range while maintaining
true RS-232 and EIA/TIA-562 voltage levels. The
MAX218 runs from two alkaline, NiCd, or NiMH cells
without any form of voltage regulator.
A shutdown mode reduces current consumption to
1µA, extending battery life in portable systems. While
shut down, all receivers can remain active or can be
disabled under logic control, permitting a system incor-
porating the CMOS MAX218 to monitor external
devices while in low-power shutdown mode.
A guaranteed 120kbps data rate provides compatibility
with popular software for communicating with personal
computers. Three-state drivers are provided on all
receiver outputs so that multiple receivers, generally of
different interface standards, can be wire-ORed at the
UART. The MAX218 is available in 20-pin DIP, SO, and
SSOP packages.
________________________Applications
19-0246; Rev 1; 7/95
Call toll free 1-800-998-8800 for free samples or literature.
__________Typical Operating Circuit
_______________General Description
Battery-Powered Equipment
Computers
Printers
Peripherals
Instruments
Modems
ON/OFF
ENABLE
4.25V
1.8V
TO
10
________________________________________________________________ Maxim Integrated Products
3
7
8
9
6
SHDN
V
T1IN
T2IN
R1OUT
R2OUT
CC
EN
1
LX
MAX218
4
T1
T2
R1
R2
19
GND
V+
5, 17, 20
T1OUT
T2OUT
R1IN
R2IN
C1+
C1-
V-
18
16
13
12
11
15
14
True RS-232 Dual Transceiver
1.8V to 4.25V-Powered,
____________________________Features
BETTER THAN BIPOLAR!
*Contact factory for dice specifications.
__________________Pin Configuration
______________Ordering Information
MAX218CPP
MAX218CWP
MAX218CAP
MAX218C/D
MAX218EPP
MAX218EWP
MAX218EAP
Operates Directly from Two Alkaline, NiCd,
or NiMH Cells
+1.8V to +4.25V Supply Voltage Range
120kbps Data Rate
Low-Cost Surface-Mount Components
Meets EIA/TIA-232E Specifications
1µA Low-Power Shutdown Mode
Both Receivers Active During Low-Power Shutdown
Three-State Receiver Outputs
Flow-Through Pinout
On-Board DC-DC Converters
20-Pin SSOP, Wide SO, or DIP Packages
TOP VIEW
PART
R1OUT
R2OUT
SHDN
GND
T1IN
T2IN
N.C.
V
LX
EN
CC
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
10
1
2
3
4
5
6
7
9
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
8
DIP/SO/SSOP
MAX218
20
19
18
17
16
15
14
13
12
11
20 Plastic DIP
20 Wide SO
20 SSOP
Dice*
20 Plastic DIP
20 Wide SO
20 SSOP
PIN-PACKAGE
GND
V+
C1+
GND
C1-
V-
T1OUT
T2OUT
R1IN
R2IN
1

Related parts for MAX218EAP+

MAX218EAP+ Summary of contents

Page 1

... R2OUT 10 R2IN R2 GND ENABLE ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. 1.8V to 4.25V-Powered, True RS-232 Dual Transceiver ____________________________Features BETTER THAN BIPOLAR! Operates Directly from Two Alkaline, NiCd, or NiMH Cells +1.8V to +4.25V Supply Voltage Range 120kbps Data Rate ...

Page 2

True RS-232 Dual Transceiver ABSOLUTE MAXIMUM RATINGS Supply Voltages V ....................................................................-0.3V to +4. .......................................................... (V V- .......................................................................+0.3V to -7. ..........................................................................+12V CC LX ................................................................-0.3V to (1V + V+) Input Voltages — — — ...

Page 3

TIMING CHARACTERISTICS (Circuit of Figure 1.8V to 4.25V 0.47µ 1µ 15µ Typical values are 3.0V +25°C PARAMETER SYMBOL ...

Page 4

True RS-232 Dual Transceiver __________________________________________Typical Operating Characteristics (Circuit of Figure 1.8V, all transmitter outputs loaded with 3kΩ SUPPLY CURRENT vs. SUPPLY VOLTAGE 140 1 TRANSMITTER FULL DATA RATE 1 TRANSMITTER 1/8 DATA ...

Page 5

1N6050 1. 4.25V C4 MAX218 3 ON/OFF SHDN 7 T1IN T1OUT T1 T2IN 8 T2OUT T2 R1OUT R2OUT R2 EN GND 4 5, 17, ...

Page 6

True RS-232 Dual Transceiver Table 1. Suggested Component Suppliers MANUFACTURER PART NUMBER Inductors—Surface Mount Murata-Erie LQH4N150K-TA Sumida CD43150 TDK NLC453232T-150K Diodes—Surface Mount Central Semiconductor CMPSH-3, Schottky Motorola MMBD6050LT1, Silicon Philips PMBD6050, Silicon Diodes—Through-Hole 1N6050, Silicon Motorola 1N5817, ...

Page 7

D1 1N6050 DC- CONVERTER MAX878 MAX756 0 MAX218 MAX856 3 ON/OFF SHDN T1IN 7 T1 T2IN R1OUT R1 10 R2OUT ...

Page 8

... 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. 8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1995 Maxim Integrated Products No ...

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