Datasheet

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_______________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 dis-

charge (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

INPUT D

N.C.

OUTPUT D

INPUT C

N.C.

OUTPUT C

INPUT A

N.C.

OUTPUT A

INPUT B

N.C.

OUTPUT B

GND

TOP VIEW

MAX1489E

DIP/SO

__________________Pin Configuration

INTERCONNECTING

CABLE

SIGNAL GROUND

TTL/CMOS

LOGIC

MOTHERBOARD

(DTE)

MODEM

(DCE)

TTL/CMOS

LOGIC

⁄

MAX1488E

⁄

MAX1489E

⁄

MAX1489E

⁄

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

TEMP RANGE PIN-PACKAGE

14 Plastic DIP

14 SO

Dice*

______________Ordering Information

* Dice are specified at T

= +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.

Summary of content (8 pages)

PAGE 1
9-0426; Rev 1; 2/03 ±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver 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.
PAGE 2
MAX1489E ±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC).............................................................+7V Input Voltage (VIN) ...............................................................±30V Output Short-Circuit Current (Shorted to GND or VCC) (Note 1) ............................Self Limiting Continuous Power Dissipation (TA = +70°C) Plastic DIP (derate 10.00mW/°C above +70°C) ..........800mW SO (derate 8.7mW/°C above +70°C) .......
PAGE 3
±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver PROPAGATION DELAY SKEW vs. TEMPERATURE tPHL tPLH 1.0 INPUT PULSE AMPLITUDE (Vp-p) 1.4 8 MAX1489E-02 MAX1489E-01 1.8 NOISE PULSE REJECTION 800 PROPAGATION DELAY SKEW (ns) PROPAGATION DELAY (µs) 2.2 600 400 VCC = 5.25V 200 VCC = 5V VCC = 4.75V 0.6 0 -40 -15 10 35 60 VIN = (VIL + VIH) ± PULSE AMP, 2 2 f = 300kHz 6 4 2 0 -40 85 MAX1489E-03 PROPAGATION DELAY vs. TEMPERATURE TEMPERATURE (°C) -15 10 35 60 85 1.1 0.
PAGE 4
MAX1489E ±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver R C 1MΩ CHARGE-CURRENT LIMIT RESISTOR R D 1500Ω IP 100% 90% DISCHARGE RESISTANCE Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES HIGHVOLTAGE DC SOURCE Cs 100pF STORAGE CAPACITOR DEVICE UNDER TEST 36.8% 10% 0 0 tRL TIME tDL CURRENT WAVEFORM Figure 2a. Human Body ESD Test Model Figure 2b.
PAGE 5
±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver HIGHVOLTAGE DC SOURCE Cs 150pF DISCHARGE RESISTANCE STORAGE CAPACITOR I PEAK CHARGE-CURRENT LIMIT RESISTOR MAX1489E I 100% 90% R C 50MΩ to 100MΩ R D 330Ω DEVICE UNDER TEST 10% t r = 0.7ns to 1ns t 30ns 60ns Figure 3a. IEC1000-4-2 ESD Test Model Figure 3b. IEC1000-4-2 ESD Generator Current Waveform Machine Model The Machine Model for ESD testing uses a 200pF storage capacitor and zero-discharge resistance.
PAGE 6
MAX1489E ±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver ___________________Chip Topography V CC INPUT A INPUT D OUTPUT A OUTPUT D INPUT B INPUT C 0.096" (2.438mm) OUTPUT B OUTPUT C GND 0.071" (1.
PAGE 7
±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver D E DIM E1 A A1 A2 A3 B B1 C D1 E E1 e eA eB L A3 A A2 L A1 0° - 15° C e B1 B eA eB D1 Plastic DIP PLASTIC DUAL-IN-LINE PACKAGE (0.300 in.) INCHES MAX MIN 0.200 – – 0.015 0.175 0.125 0.080 0.055 0.022 0.016 0.065 0.045 0.012 0.008 0.080 0.005 0.325 0.300 0.310 0.240 – 0.100 – 0.300 0.400 – 0.150 0.115 PKG. DIM PINS P P P P P N D D D D D D 8 14 16 18 20 24 INCHES MIN MAX 0.348 0.390 0.735 0.765 0.745 0.765 0.885 0.915 1.015 1.045 1.
PAGE 8
MAX1489E ±15kV ESD-Protected, Quad, Low-Power RS-232 Line Receiver Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) DIM D 0°-8° A 0.101mm 0.004in. e B A1 E C L Narrow SO SMALL-OUTLINE PACKAGE (0.150 in.) H A A1 B C E e H L INCHES MAX MIN 0.069 0.053 0.010 0.004 0.019 0.014 0.010 0.007 0.157 0.150 0.050 0.244 0.228 0.050 0.