Typical Propagation Delays: 19 ns

CMOS Design for Low Power

Typical Input Hysteresis: 60 mV

Inputs Won’t Load Line when VCC = 0V

Meets the Requirements of EIA Standard RS-422

TRI-STATE Outputs for System Bus
Compatibility

TTL Input Compatible
Typical Propagation Delays: 6 ns
Typical Output Skew: 0.5 ns
Outputs Won’t Load Line When VCC = 0V
Meets the Requirements of EIA Standard RS- 422

Operation from Single 5V Supply
TRI-STATE Outputs for Connection to System part Buses
Low Quiescent Current

Available in 3.3V, 5.0V, and adjustable versions
Current limiting and thermal protection
Output current: 5A
Industrial temperature range: −40°C to 125°C
Line regulation: 0.015% (typical)
Load regulation: 0.1% (typical)

Features
1• >400-Mbps (200 MHz) Switching Rates
50-ps Differential Skew (Typical)
0.1-ns Channel-to-Channel Skew (Typical)
2.5-ns Maximum Propagation Delay
3.3-V Power Supply Design
Flow-Through Pinout
Power Down High Impedance on LVDS Inputs
Low Power Design (18 mW at 3.3-V static)
Interoperable with Existing 5-V LVDS Networks
Accepts Small Swing (350 mV Typical) Differential Signal Levels
Supports Open, Short and Terminated Input FailSafe
Conforms to ANSI/TIA/EIA-644 Standard
Industrial Temperature Operating Range: −40°C o 85°C
Available in SOIC and Space Saving WSON
Package

FEATURES DESCRIPTION
The DS3487 quad RS-422 driver features four 2

Four Independent Drivers
independent drivers which comply with EIA Standards
TRI-STATE Outputs for the electrical characteristics of balanced voltage
Fast Propagation Times (typ 10 ns) digital interface circuits. The outputs are TRI-STATE
TTL Compatible structures which are forced to a high impedance state
when the appropriate output control pin reaches a
5V Supply logic zero condition. All input pins are PNP buffered
Output Rise and Fall Times Less than 15 ns to minimize input loading for either logic one or logic
Pin Compatible with DS8924 and MC3487

Features
Rail-to-rail input common-mode voltage range
(specified over temperature)
Rail-to-rail output swing (within 20mV of supply
rail, 100kΩ load)
Specified 3V, 5V, and 15V performance
Excellent CMRR and PSRR: 82dB
Ultra-low input current: 20fA
Specified for 2kΩ and 600Ω loads
Improved replacement for TLC272, TLC277

Common-Mode Input Voltage Range Extends Below the Negative Rail (C-Suffix,I-Suffix types)
Low Noise …Typically 25 nV/√Hz at f = 1 kHz
Output Voltage Range Includes Negative Rail

Simple and easy to design with (using off-the-shelf
external components)
150-mΩ DMOS output switch
3.3-V, 5-V, 12-V fixed output and adjustable
(1.2 V to 37 V) versions
50-µA standby current when switched OFF
±2% maximum output tolerance over full line and
load conditions
Wide input voltage range: 8 V to 40 V
260-kHz fixed frequency internal oscillator
–40 to 125°C operating junction temperature range