1FEATURES

2• Radiation Ensured 300 krad(Si)

• Meets EIA-485 and EIA-422A

• Meets SCSI-1 (5 MHZ) Specifications

• Designed for Multipoint Transmission

• Wide Positive and Negative Input/Output Bus

Voltage Ranges

• Thermal Shutdown Protection

• Driver Positive and Negative Current-Limiting

• High Impedance Receiver Input

• Receiver Input Hysteresis of 50 mV Typical

• Operates from Single 5.0V Supply

• Reduced Power Consumption

• Pin Compatible with DS3695 and SN75176A

DESCRIPTION

The DS16F95 Differential Bus Transceiver is a

monolithic integrated circuit designed for bidirectional

data communication on balanced multipoint bus

transmission lines. The transceiver meets EIA

standard RS-485 as well as RS-422A.

The DS16F95 offers improved performance due to

the use of state-of-the-art L-FAST bipolar technology.

The L-FAST technology allows for higher speeds and

lower currents by utilizing extremely short gate delay

times. Thus, the DS16F95QML features lower power,

extended temperature range and improved

specifications.

The DS16F95 combines a TRI-STATE differential line

driver and a differential input line receiver, both of

which operate from a single 5.0V power supply. The

driver and receiver have an active Enable that can be

externally connected to function as a direction control.

The driver differential outputs and the receiver

differential inputs are internally connected to form

differential input/output (I/O) bus ports that are

designed to offer minimum loading to the bus

whenever the driver is disabled or when VCC = 0V.

These ports feature wide positive and negative

common mode voltage ranges, making the device

suitable for multipoint applications in noisy

environments.

The driver is designed to accommodate loads of up to

60 mA of sink or source current and features positive

and negative current limiting in addition to thermal

shutdown for protection from line fault conditions.

The DS16F95 can be used in transmission line

applications employing the DS96F172 and the

DS96F174 quad differential line drivers and the

DS96F173 and DS96F175 quad differential line

receivers.