MAX3185CAP+ Maxim Integrated Products, MAX3185CAP+ Datasheet

IC RS-232 SERIAL 230KBPS 20-SSOP

MAX3185CAP+

Manufacturer Part Number
MAX3185CAP+
Description
IC RS-232 SERIAL 230KBPS 20-SSOP
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet
1.MAX3185CAP.pdf (8 pages)

Specifications of MAX3185CAP+

Number Of Drivers/receivers
3/5
Protocol
RS232
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
20-SSOP
Propagation Delay Time Ns
4 us
Operating Supply Voltage
4.5 V to 5.5 V
Supply Current
1 mA
Operating Temperature Range
0 C to + 70 C
Data Rate
230 Kbps
Mounting Style
SMD/SMT
Number Of I/os
3 / 5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3185 is a complete DTE RS-232 serial port
designed to meet the stringent ESD requirements of the
European community. All transmitter outputs and receiv-
er inputs are protected to ±15kV using IEC 1000-4-2
Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact
Discharge, and ±15kV using the Human Body Model.
The MAX3185 has three RS-232 transmitters, five RS-
232 receivers, and no charge pump, optimizing it for
operation in desktop PC and motherboard applications.
It is guaranteed to run at data rates up to 230kbps, pro-
viding compatibility with popular software for communi-
cating with personal computers. Power-supply current
is less than 300µA for I
for I
The MAX3185 is pin and functionally compatible with
the industry-standard 75185, so existing designs can
instantly become EMC compliant. The MAX3185 is
available in an SO package and in the tiny SSOP that
further reduces board space.
________________________Applications
19-1076; Rev 0; 9/96
TTL/CMOS
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
RS-232 Serial Port for Motherboards/Desktop PCs
__________Typical Operating Circuit
_______________General Description
LOGIC
CC
±15kV ESD-Protected, EMC-Compliant, 230kbps
I/O
.
Desktop PC
Motherboards
Instruments
Equipment Meeting IEC1000-4-2
MAX3186
T1
T2
T3
T4
T5
R1
R2
R3
________________________________________________________________ Maxim Integrated Products
INTERCONNECTING
DD
RS-232
CABLE
and I
SS
, and less than 1mA
MAX3185
R2
R1
R3
R4
R5
T1
T2
T3
TTL/CMOS
LOGIC
I/O
____________________________Features
______________Ordering Information
MAX3185CWP
MAX3185CAP
MAX3185EWP
MAX3185EAP
__________________Pin Configuration
Enhanced ESD Protection:
Latchup Free During an ESD Event
20-Pin SSOP and SO Packages
Guaranteed 230kbps Data Rate
Flow-Through Pinout
Pin Compatible with SN75C185
Complete DTE Serial Port
TOP VIEW
±15kV—Human Body Model
±8kV—IEC1000-4-2, Contact Discharge
±15kV—IEC1000-4-2, Air-Gap Discharge
PART
T1OUT
T2OUT
T3OUT
R1IN
R2IN
R3IN
R4IN
R5IN
V
V
DD
SS
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
10
0°C to +70°C
0°C to +70°C
1
2
3
4
5
6
7
8
9
SO/SSOP
MAX3185
17
14
13
20
19
18
16
15
12
11
20 SO
20 SSOP
20 SO
20 SSOP
PIN-PACKAGE
T1IN
T2IN
V
R1OUT
R2OUT
R3OUT
R4OUT
T3IN
R5OUT
GND
CC
1

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MAX3185CAP+ Summary of contents

Page 1

... INTERCONNECTING I/O T4 CABLE ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 ____________________________Features Enhanced ESD Protection: ±15kV—Human Body Model ±8kV—IEC1000-4-2, Contact Discharge ±15kV—IEC1000-4-2, Air-Gap Discharge Latchup Free During an ESD Event 20-Pin SSOP and SO Packages ...

Page 2

ESD-Protected, EMC-Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs ABSOLUTE MAXIMUM RATINGS V ...........................................................................-0. .........................................................................-0.3V to +14V DD V ......................................................................... +0.3V to -14V SS Input Voltages T ........................................................................-0. ...................................................................................±30V IN Output ...

Page 3

ESD-Protected, EMC-Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs ELECTRICAL CHARACTERISTICS (continued +4.5V to +5.5V +10.8V to +13.2V are +25°C.) A PARAMETER SYMBOL ESD CHARACTERISTICS ESD Protection TIMING CHARACTERISTICS ...

Page 4

ESD-Protected, EMC-Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs __________________________________________Typical Operating Characteristics (V = +5.0V +12.0V -12.0V SUPPLY CURRENT vs. SUPPLY VOLTAGE 240kbps 120kbps ...

Page 5

ESD-Protected, EMC-Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs ______________________________________________________________Pin Description PIN NAME 12, 14, 17, 18, 19 R5OUT–R1OUT 16, 15, 13 T3IN, T2IN, T1IN GND R1IN–R5IN ...

Page 6

ESD-Protected, EMC-Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs Human Body Model Figure 2a shows the Human Body Model, and Figure 2b shows the current waveform it generates when dis- charged into a low impedance. This model consists of ...

Page 7

ESD-Protected, EMC-Compliant, 230kbps RS-232 Serial Port for Motherboards/Desktop PCs 3.0V DRIVER 1.5V INPUT PHL PLH 3.3V 3.0V V OUT -3.0V -3. SIGNAL R L GENERATOR Figure 3. Slew-Rate ...

Page 8

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 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 8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...

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