Maxim MAX3187EAX, MAX3187CAX Datasheet
_______________General Description
The MAX3187 complete, dual DTE RS-232 serial port
meets the stringent ESD requirements of the European
Community. All transmitter outputs and receiver 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 MAX3187’s six RS-232 transmitters and ten RS-232
receivers require no charge pump. Guaranteed to run
at data rates up to 230kbps, the MAX3187 is optimized
for desktop PC and motherboard applications, and is
compatible with popular software for PC communications. Power-supply current is less than 1mA for I
DD
and ISS, and less than 3mA for ICC.
The MAX3187 is available in a space-saving 36-pin
SSOP package.
________________________Applications
Desktop PC
Motherboards
Instruments
Equipment Meeting IEC 1000-4-2
____________________________Features
♦ Enhanced ESD Protection:
±15kV—Human Body Model
±8kV—IEC 1000-4-2, Contact Discharge
±15kV—IEC 1000-4-2, Air-Gap Discharge
♦ Latchup Free During an ESD Event
♦ 36-Pin SSOP Package
♦ Guaranteed 230kbps Data Rate
♦ Flow-Through Pinout
♦ Two Complete DTE Serial Ports
♦ 6 RS-232 Drivers and 10 RS-232 Receivers
MAX3187
±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
________________________________________________________________
Maxim Integrated Products
1
35
34
33
32
31
30
29
28
27
26
25
24
23
3
4
5
6
7
8
9
10
11
12
13
14
R3IN
T1OUT
T2OUT
R4IN
T4OUT
T3OUT
R5IN
V
DD
GND
R6IN
R7IN
R8IN
T4IN
R8OUT
R7OUT
R6OUT
V
SS
V
CC
R5OUT
T3IN
R4OUT
T2IN
T1IN
R3OUT
361 R1INR1OUT
2 R2INR2OUT
SSOP
TOP VIEW
MAX3187
22
21
15
16
T5OUT
R9IN
1918 R10INR10OUT
2017 T6OUTT6IN
R90UT
T5IN
19-1186; Rev 1; 10/98
PART
MAX3187CAX
MAX3187EAX -40°C to +85°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
36 SSOP
36 SSOP
______________Ordering Information
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 1-800-835-8769.
____________________________________________________________Pin Configuration
Typical Operating Circuit appears at end of data sheet.
MAX3187
±15kV ESD-Pr otected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= +4.5V to +5.5V, VDD= +10.8V to +13.2V, VSS= -10.8V to -13.2V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC...........................................................................-0.3V to +7V
V
DD
.........................................................................-0.3V to +14V
V
SS
......................................................................... +0.3V to -14V
Input Voltages
T_IN......................................................................-0.3V to +6V
R_IN.................................................................................±30V
Output Voltages
T_OUT..............................................................................±15V
R_OUT....................................................-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration
T_OUT (one at a time)............................................Continuous
R_OUT (one at a time)............................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
SSOP (derate 11.76mW/°C above +70°C) ..................762mW
Operating Temperature Ranges
MAX3187CAX .....................................................0°C to +70°C
MAX3187EAX ..................................................-40°C to +85°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (soldering, 10sec) ............................+300°C
VCC= VDD= VSS= 0, V
T_OUT
= ±2V
VDD= 12V, VSS= -12V, RL= 3kΩ
T_IN
VDD= 7.0V, VSS= -7.0V, RL= 3kΩ
T_IN
No load
No load
R_OUT; I
SOURCE
= 1mA
No load
R_OUT; I
SINK
= 3.2mA
CONDITIONS
V2.4RS-232 Input Threshold High
V0.75RS-232 Input Threshold Low
V-25 25Receiver Input Voltage Range
mA±35 ±60
RS-232 Output Short-Circuit
Current
Ω300Transmitter Output Resistance
V
±9.5
Output Voltage Swing
±5.0
VVCC- 0.6V
OHR
Output Voltage High
V0.4V
OLR
Output Voltage Low
10.8 13.2V
DD
4.5 5.5V
CC
µA0.01 1Input Leakage Current
V2.0V
IHT
Input Logic Threshold High
V0.8V
ILT
Input Logic Threshold Low
V
-13.2 -10.8V
SS
Operating Voltage Range
750 3000I
CC
370 1000I
DD
µA
370 1000I
SS
Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
V0.65RS-232 Input Hysteresis
kΩ3 5 7RS-232 Input Resistance
mA±10
Receiver Output Short-Circuit
Current
RECEIVER INPUTS
TRANSMITTER OUTPUTS
LOGIC
DC CHARACTERISTICS
MAX3187
±15kV ESD-Pr otected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VCC= +4.5V to +5.5V, VDD= +10.8V to +13.2V, VSS= -10.8V to -13.2V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at TA= +25°C.)
VDD= 12V, VSS= -12V, RL= 3kΩ,
CL= 1000pF, TA= +25°C
VDD= 12V, VSS= -12V,
RL= 3kΩ to 7kΩ,
measured from +3V to -3V
or -3V to +3V,
Figure 1, TA= +25°C
IEC 1000-4-2 (Contact Discharge)
4
Human Body Model
t
PHLT
8 30
µs
SR
Transmitter Output
Propagation Delay, High to Low
V/µsTransition Output Slew Rate
IEC 1000-4-2 (Air-Gap Discharge)
VCC= 5V, CL= 50pF, TA= +25°C
VCC= 5V, CL= 50pF, TA= +25°C
CL= 50pF to
1000pF
4.0
4.0
CONDITIONS
t
PHLR
CL= 50pF to
2500pF
µs
VDD= 12V, VSS= -12V, RL= 3kΩ,
CL= 1000pF, TA= +25°C
Receiver Output
Propagation Delay, High to Low
t
PLHR
4
µs
t
PLHT
Receiver Output
Propagation Delay, Low to High
µs
Transmitter Output
Propagation Delay, Low to High
T3OUT = -5mA, T1OUT = T2OUT = 5mA
120
±7.5 VMouse Driveability
VCC= 5V, CL= 50pF, TA= +25°C 0.4t
SKR
µs
Receiver Propagation Delay
Skew,
|
t
PLHR
- t
PHLR
|
VCC= 5V, VDD= 12V,
VSS= -12V,
RL= 3kΩ to 7kΩ,
TA= +25°C, any two
transmitters switching
230
kbpsDRGuaranteed Data Rate
±8
±15
VDD= 12V, VSS= -12V, RL= 3kΩ,
CL= 1000pF, TA= +25°C
0.4t
SKT
µs
Transmitter Propagation Delay
Skew,
|
t
PLHT
- t
PHLT
|
CL= 50pF to
1000pF
4 30
CL= 150pF to
2500pF
kV
±15
ESD Protection
UNITSMIN TYP MAXSYMBOLPARAMETER
ESD CHARACTERISTICS
TIMING CHARACTERISTICS
Loading...