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Issue A

ABSOLUTE MAXIMUM RATINGS

(Voltages referenced to GND, except where noted)

Rating

Symbol

Value

Unit

DC Supply Voltage (VDD ≥ VCC)

VDD

VSS

VCC

– 0.5 to + 13.5

+ 0.5 to – 13.5

– 0.5 to + 6.0

V

Input Voltage Range

Rx1 – Rx

n

DI1 – DI

n

VIR

VSS – 15 to VDD + 15

0.5 to VCC + 15

V

DC Current Drain per Pin

I

± 00

mA

Power Dissipation

PD

1

W

Operating Temperature Range

TA

– 40 to + 85

°C

Storage Temperature Range

Tstg

– 85 to + 150

°C

Parameter

Symbol

Min

Typ

Max

Unit

DC Supply Voltage

VDD

VSS

VCC

4.5

– 4.5

4.5

5 to 12

– 5 to – 12

5

13.2

– 13.2

5.5

V

Quiescent Supply Current (Outputs Unloaded, Inputs Low)

VDD = + 12 V

VSS = – 12 V

VCC = + 5 V

IDD

ISS

ICC

—

—

—

425

– 400

110

635

– 600

200

µA

RECEIVER ELECTRICAL SPECIFICATIONS

(Voltage polarities referenced to GND = 0 V, VDD = + 12 V, VSS = – 12 V, TA = – 40 to + 85°C, VCC = + 5 V, ± 10%)

Characteristic

Symbol

Min

Typ

Max

Unit

Input Turn–On Threshold

Rx1 – Rx

n

VDO = VOL

Von

1.35

1.8

2.35

V

Input Turn–Off Threshold

Rx1 – Rx

n

VDO = VOH

Voff

0.75

1

1.25

V

Input Threshold Hysteresis

∆ = Von – Voff

Vhys

0.6

0.8

—

V

Input Resistance

(VSS – 15 V) ≤ V Rx1 – Rxn ≤ (VDD + 15 V)

Rin

3

5.4

7

k

High Level Output Voltage

Iout = – 20 µA

VRx = – 3 to – 25 V* (DO1 – DOn)Iout = – 1.0 mA

VOH

4.9

3.8

4.9

4.3

—

—

V

Low Level Output Voltage

Iout = + 2 mA

VRx = + 3 to + 25 V* (DO1 – DOn)Iout = + 4 mA

VOL

—

—

0.02

0.5

0.5

0.7

V

* This is the range of input voltages as specified by EIA–232–E to cause a receiver to be in the high or low.

This device contains circuitry to protect the

inputs and outputs against damage due to high

static voltages or electric fields; however, it is

advised that normal precautions be taken to

avoid applications of any voltage higher than

maximum rated voltages to this high imped-

ance circuit.

For proper operation it is recommended that

Vout and Vin be constrained to the ranges

described as follows:

Digital I/O: Driver Inputs (DI):

(GND ≤ VDI ≤ VCC).

Receiver Outputs (DO):

(GND ≤ VDO ≤ VCC).

EIA–232 I/O: Driver Outputs (Tx):

(VSS ≤ VTx1 – Txn ≤ VDD).

Receiver Inputs (Rx):

VSS – 15 V ≤ VRx1 – Rxn ≤ VDD

+ 15 V).

Reliability of operation is enhanced if unused

outputs are tied off to an appropriate logic

voltage level (e.g., either GND or VCC for DI,

and GND for Rx).

LANSDALE Semiconductor, Inc.

ML145403, ML145404, ML145405, ML145408