MAXIM MAX1489E Technical data
_______________General Description
The MAX1489E quad, low-power line receiver is
designed for EIA/TIA-232, EIA/TIA-562, and CCITT V.28
communications in harsh environments. Each receiver
input is protected against ±15kV electrostatic discharge (ESD) shocks. These inputs have a ±25V range
and feature hysteresis and time-domain filtering. The
outputs are TTL and CMOS compatible. The MAX1489E
has a 120kbps guaranteed data rate. Supply current is
typically 350µA.
The MAX1489E is pin compatible with the MC1489,
MC14C89, SN75189, SN75C189, DS1489, and
DS14C89. It is available in 14-pin plastic DIP and SO
packages.
________________________Applications
PC Motherboards
Modems
Interfacing Data Terminal Equipment (DTE) with
Data Circuit-Terminating Equipment (DCE)
Equipment Meeting IEC1000-4-2 (formerly
IEC801-2) or ±15kV ESD Protection
____________________________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
♦ Low 350µA Supply Current
♦ Input Hysteresis and Time-Domain Filtering
Eliminate the Need for External Filtering
♦ Stable Input Thresholds
♦ Pin Compatible with MC1489, MC14C89, SN75189,
SN75C189, DS1489, and DS14C89
MAX1489E
±15kV ESD-Protected, Quad,
Low-Power RS-232 Line Receiver
________________________________________________________________ Maxim Integrated Products 1
__________________Pin Configuration
INTERCONNECTING
CABLE
SIGNAL GROUND
TTL/CMOS
LOGIC
PC
MOTHERBOARD
(DTE)
MODEM
(DCE)
TTL/CMOS
LOGIC
1
⁄4 MAX1488E
1
⁄4 MAX1489E
1
⁄4 MAX1489E
1
⁄4 MAX1488E
__________Typical Operating Circuit
19-0426; Rev 1; 2/03
PART
MAX1489ECPD
MAX1489ECSD
MAX1489EC/D 0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP RANGE PIN-PACKAGE
14 Plastic DIP
14 SO
Dice*
______________Ordering Information
* Dice are specified at TA= +25°C.
MAX1489EEPD -40°C to +85°C 14 Plastic DIP
MAX1489EESD -40°C to +85°C 14 SO
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.
TOP VIEW
INPUT A
N.C.
OUTPUT A
INPUT B
N.C.
OUTPUT B
GND
1
MAX1489E
2
3
4
5
6
7
DIP/SO
14
13
12
11
10
9
8
V
CC
INPUT D
N.C.
OUTPUT D
INPUT C
N.C.
OUTPUT C
MAX1489E
±15kV ESD-Protected, Quad,
Low-Power RS-232 Line Receiver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= 5V ±10%, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at VCC= 5V, 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.
Note 1: Only one output may be shorted at a time.
Note 2: See Noise Pulse Rejection graph in Typical Operating Characteristics section.
Supply Voltage (V
CC
).............................................................+7V
Input Voltage (V
IN
)...............................................................±30V
Output Short-Circuit Current
(Shorted to GND or V
CC
) (Note 1) ............................Self Limiting
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 10.00mW/°C above +70°C) ..........800mW
SO (derate 8.7mW/°C above +70°C)...........................695mW
Operating Temperature Ranges
MAX1489EC_D ...................................................0°C to +70°C
MAX1489EE_D ................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Pulse amplitude = 5V (Note 2)
V
OUT
= 10% to 90%
Figure 1
Figure 1
Figure 1
VIN≥ 2.4V, I
OUT
= 3.2mA
Shorted to GND
Shorted to V
CC
CONDITIONS
µs1.0t
N
Input Noise Rejection
ns35 120t
TR
Output Transition Time
ns70t
SKEW
Output Propagation Delay Skew,
I
t
PLH
- t
PHL
I
µs1.45 4.0t
PHL
Output Propagation Delay,
High to Low
µs1.38 4.0t
PLH
Output Propagation Delay,
Low to High
kΩ3.0 5.0 7.0R
IN
Input Resistance
V1.11V
HYST
Input Hysteresis
V0.75 1.06 1.30V
IL
Input Voltage Low
V1.60 2.17 2.60V
IH
Input Voltage High
V-25 25V
IN
Input Voltage Range
V0.17 0.4V
OL
Output Voltage Low
-35
mA
60
I
OS
Output Short-Circuit Current
(Note 1)
µA260 600I
CC
Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
kbps120 240DRGuaranteed Data Rate
Human Body Model
kV
±15
IEC1000-4-2 (Contact Discharge) ±8
IEC1000-4-2 (Air-Gap Discharge) ±15
ESD Protection
VIN≤ 0.4V
I
OUT
= -20µA
I
OUT
= -3.2mA
V
2.5 4.41
V
OH
Output Voltage High
3.5 4.99
DC CHARACTERISTICS
TIMING CHARACTERISTICS
ESD CHARACTERISTICS
MAX1489E
±15kV ESD-Protected, Quad,
Low-Power RS-232 Line Receiver
_______________________________________________________________________________________ 3
NAME FUNCTION
1, 4, 10,
13
INPUT_ Receiver Inputs
2, 5, 9,
12
N.C.
No Connect—not internally
connected
PIN
3, 6, 8,
11
OUTPUT_ Receiver Outputs
7 GND Ground
_____________________Pin Description
14 V
CC
Supply Voltage
__________________________________________Typical Operating Characteristics
(VCC= 5V, TA = +25°C, unless otherwise noted.)
Figure 1. Timing Diagram
PROPAGATION DELAY vs. TEMPERATURE
2.2
MAX1489E-01
1.8
1.4
1.0
PROPAGATION DELAY (µs)
0.6
-40
t
PHL
t
PLH
-15 35 85
10
TEMPERATURE (°C)
60
PROPAGATION DELAY SKEW (ns)
PROPAGATION DELAY SKEW
vs. TEMPERATURE
800
600
400
VCC = 5.25V
200
0
-40
-15 35 85
TEMPERATURE (°C)
10
VCC = 5V
VCC = 4.75V
S.G.
0V
V
OUT
60
3.0V
MAX1489E-02
INPUT PULSE AMPLITUDE (Vp-p)
1.5V
t
PHL
50% 50%
t
TR
NOISE PULSE REJECTION
8
6
4
2
0
0.7
10%
VIN = (VIL + VIH) ± PULSE AMP,
2 2
f = 300kHz
1.1 1.9 2.7
1.5
INPUT PULSE WIDTH (µs)
t
PLH
90%
t
TR
V
CC
2.3
V
OH
V
OL
MAX1489E-03
SIGNAL
GENERATOR
(S.G.)
NOTE: S.G. SET TO f = 20kHz;
DUTY CYCLE = 50%;
, tF < 5.0ns
t
R
50pF V
OUT
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