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FOUR INDEPENDENT LINE DRIVERS WITH
100 mAUP TO35VOUTPUTS

INPUT SIGNALS BETWEEN -7V AND +35V,
WITHPRESETTABLETHRESHOLD

PUSH-PULL OUTPUTS WITH THREE STATE
CONTROL AND TRUE ZERO CURRENT BE­TWEENV

CURRENT LIMITING ON EACH OUTPUT EF­FECTIVE IN THE FULL ”GROUND TO V
OUTPUTVOLTAGERANGE

OUTPUT VOLTAGE CLAMP TO V
GROUND

OVERTEMPERATURE AND UNDERVOL­TAGE PROTECTIONS

DIAGNOSTIC FOR OVERTEMPERATURE,
UNDERVOLTAGEAND OVERCURRENT

PRESETTABLE DELAY FOR OVERCUR­RENTDIAGNOSTIC

HIGH SPEED OPERATION: UP TO 300kHz
WITH 35VSWING

ANDGROUND

S

INDUSTRIAL QUAD LINE DRIVER

S

S AND TO

ADVANCE DATA

”

POWERDIP 16+2+2 SO 16+2+2

ORDERING NUMBER: L6374DP (POWERDIP16+2+2)

L6374FP (SO16+2+2)

DESCRIPTION

The L6374 is especiallydesignedto be used as a
line driver in industrial control systems based on
the 24V signal levels (IEC1131, 24VDC).

L6374

BLOCK DIAGRAM

December 1994

This is advanced information on a new product now in development orundergoing evaluation.Details are subject to change without notice.

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L6374

ABSOLUTE MAXIMUM RATINGS

Symbol Pin Parameter Value Unit

S 1 Supply Voltage(t

V

Supply Voltage(DC) 40 V

ilog 12, 13 Logic Input Voltage (DC) -0.3 to 7 V

V

ilog Logic Input forced current, per pin ±1mA

I

i7, 8,

I

i ChannelInput Voltage - 7 to35 V

V

out 3, 4,

I

9, 10

17, 18

out OutputVoltage (forced, not resulting from an inductive

V

Channel Input Current (forced) ±2mA

Output Current (forced, apart from inductive load) ±100 mA
Output Current (forced, apart from inductive load)

same t

< 10ms

W

kick)

I

set 11 Setting pin forced current ±1mA

set Setting pin forced voltage -0.3 to 5 V

V

diag 14 External voltage -0.3 to 35 V

V

diag Externallyforced current -10 to 10 mA

I

C3 13 Voltage on the delay capacitor, externally forced -0.3 to 4.5 V

V

op Ambient temperature, operating range -25 to 85 °C

T

j Junction temperature, operatingrange (see

T

Overtemperature Protection)

T

stg Storage temperature -55 to 150 °C

< 10ms) 50 V

W

±1A

-0.3 to VS +0.3 V

-25 to 125 °C

PIN CONNECTION (Top view)

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ELECTRICALCHARACTERISTICS (VS = 24V; Tj = -25 to 125°C; unless otherwise specified.)
DC OPERATION

Symbol Pin Parameter Test Condition Min. Typ. Max. Unit

S 1 Supply Voltage 10.8 35 V

V

sh UV UpperThreshold 9 10.8 V

V

ys1 UV Hysteresis 250 450 650 mV

H

qsc Quiescent Current Outputs Open 3 5 mA

I

ref 11 Input Comparators Reference

V

Voltage

I

ref

Sink/Source Current on
Reference Pin

th 7, 8,

V

il Input Low Level V

V

ih Input High Level V

V

i Input Voltage(Operative Range) -7 35 V

V

bias Input Bias Current 0 < Vi <VS -1 1 µA

I

ys2 Input ComparatorsHysteresis See Analog Inputs Sections 100 200 350 mV

H

h OVT Upper Threshold 170 °C

T

T OVT Hysteresis 20 °C

H

sc 3, 4,

I

on Internal Voltage Drop @ Rated

V

17,18

Comparator Threshold with

9, 10

External Bias

Current Limit Vi =-7toVS;Vout = 0 to VS; 110 200 300 mA

Current

I

lkg

in 12 Push-Pull Mode Request -0.2 0.8 V

V

Output 3-State Leakage Current V

3-State Mode Request 2 5.5 V

in Input Current V

I

dlkg 14 Diagnostic OutputLeakage Diagnostic Off; V

I

diag Diagnostic OutputVoltage Drop I

V

Reference pin Floating 1.05 1.25 1.35 V

V

= 0V -30 -20 -10 µA

ref

=5V 10 20 30 µA

V

ref

VS = 9 to 12V -0.2 2.0 V

S = 12 to 35V -0.2 5.0 V

V

Externally Biased -7 V

REF

REF

-0.2

Pin V

Floating -7 0.8 V

REF

Externally Biased V

REF

REF

35 V

+0.2

Pin V

i = -7V -1 -0.5 -0.1 mA

V

Iout = ±100mA; Sourced @ High

Floating 2 35 V

REF

400 600 mV
Output, Sunk @ Low Output
T

= 125°C

j

Same, T

out

i

diag

=25°C 250 400 mV

j

= 0 to V

S

-25 25 µA

=0V 10 25 µA

= 24V 5 µA

diag

=5mA 200 500 mV

L6374

V

AC OPERATION (VS = 10.8 to 35V; Tj = -25 to 125°C; I

= 100mA; unless otherwise specified; see

out

switchingwaveforms diagrams)

Symbol Pin Parameter Test Condition Min. Typ. Max. Unit

dr 7to4

t

8to3

df Delay Time on Falling Edge Rl to ground 500 1000 ns

t

r 3,4,

t

9to18
10to17

17, 18

f Fall Time Rl to ground 150 300 ns

t

Delay Time on Rising Edge R

l to ground 1000 1500 ns

to V

R

l

S

to V

R

l

S

500 1000 ns

1000 1500 ns

Rise Time Rl to ground 120 250 ns

to V

R

l

S

to V

R

l

S

120 250 ns

150 300 ns

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L6374

THERMAL DATA

Symbol Parameter DIP20 SO20 Unit

th j-pin Thermal Resistance, Junction to Pin 12 17 °C/W

R

th j-amb1 Thermal Resistance, Junction to Ambient (see Thermal

R

R

th j-amb2 Thermal Resistance, Junction to Ambient (see Thermal

Characteristics)

Characteristics)

40 65 °C/W

50 80 °C/W

THERMAL CHARACTERISTICS

R

th j-pins

POWERDIP. The thermalresistanceis referred
to the thermalpath from thedissipatingregion
on the top surface of the siliconchip, to the
points alongthe four central pins of the pack­age, at a distanceof 1.5 mm awayfrom the
stand-offs.
SO. Similarly, the referencepoint is the knee
on the four central pins, where the pins areup­wardly bent and the solderingjoint with the
PCB footprintcan be made.

R

th j-amb1

If a dissipatingsurface, thick at least 35 µm,
and with a surfacesimilar or bigger thanthe
one shown, iscreated making use of the
printed circuit.

Figure1: Printed Heatsink

Such heatsinkingsurface isconsidered on the
bottom side of an horizontalPCB (worst case).

R

th j-amb2

If the power dissipatingpins (the four central
ones), as well as the others, have aminimum
thermalconnection with the externalworld
(very thin strips only) so thatthe dissipation
takesplace through still air and through the
PCB itself.
It is the same situationof pointabove, without
any heatsinkingsurface createdon purposeon
the board.

Additionaldata for the PowerDip package can be
foundin:

ApplicationNote 9030:
Thermal Characteristicsof the PowerDip
20,24PackagesSolderedon 1,2,3 oz.
CopperPCB

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