Datasheet DS75154MX, DS75154M Datasheet (NSC)

DS75154
Quad Line Receiver

General Description

The DS75154 is a quad monolithic line receiver designed to
satisfy the requirements of the standard interface between
data terminalequipment and data communication equipment
as defined by EIA Standard RS-232C. Other applications are
in relatively short, single-line, point-to-point data transmis­sion systems and for level translators. Operation is normally
from a single 5V supply; however, a built-in option allows op­eration from a 12V supply without the use of additional com­ponents. The output is compatible with most TTL and LS cir­cuits when either supply voltage is used.

In normal operation, the threshold-control terminals are con­nected to the V

CC1

terminal, pin 15, even if power is being

supplied via the alternate V

CC2

terminal, pin 16. This pro­vides a wide hysteresis loop which is the difference between
the positive-going and negative-going threshold voltages. In
this mode, if the input voltage goes to zero, the output volt­age will remain at the low or high level as determined by the
previous input.

For fail-safe operation, the threshold-control terminals are
open. This reduces the hysteresis loop by causing the

negative-going threshold voltage to be above zero. The
positive-going threshold voltage remains above zero as it is
unaffected by the disposition of the threshold terminals. In
the fail-safe mode, if the input voltage goes to zero or an
open-circuit condition, the output will go to the high level re­gardless of the previous input condition.

Features

n Input resistance, 3 kΩ to7kΩover full RS-232C voltage

range

n Input threshold adjustable to meet “fail-safe”

requirements without using external components

n Inverting output compatible with TTL or LS
n Built-in hysteresis for increased noise immunity
n Output with active pull-up for symmetrical switching

speeds

n Standard supply voltage—5V or 12V

Schematic Diagram

DS005795-1

Note: When using V

CC1

(pin 15), V

CC2

(pin 16) may be left open or shorted to V

CC1

. When using V

CC2,VCC1

must be left open or connected to the

threshold control pins.

May 1998

DS75154 Quad Line Receiver

© 1998 National Semiconductor Corporation DS005795 www.national.com

Absolute Maximum Ratings (Note 2)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Normal Supply Voltage (Pin 15),

(V

CC1

)7V

Alternate Supply Voltage (Pin 16),

(V

CC2

) 14V

Input Voltage

±

25V

Storage Temperature Range −65˚C to +150˚C

Maximum Power Dissipation (Note 1) at 25˚C

SO Package 650 mW

Lead Temperature (Soldering, 4

seconds) 260˚C

Operating Conditions

Min Max Units

Supply Voltage (Pin 15), (V

CC1

) 4.5 5.5 V

Alternate Supply Voltage

(Pin 16), (V

CC2

) 10.8 13.2 V

Input Voltage

±

15 V

Temperature, (T

A

) 0 +70 ˚C

Note 1: Derate molded DIP package 10.9 mW/˚C above 25˚C; derate SO
package 8.01 mW/˚C above 25˚C.

Electrical Characteristics (Notes 3, 4, 5)

Symbol Parameter Conditions Min Typ Max Units

V

IH

High-Level Input Voltage (

Figure 1

)3V

V

IL

Low-Level Input Voltage (

Figure 1

)−3V

V

T+

Positive-Going Threshold Voltage (

Figure 1

) Normal Operation 0.8 2.2 3 V

Fail-Safe Operation 0.8 2.2 3 V

V

T−

Negative-Going Threshold Voltage (

Figure 1

) Normal Operation −3 −1.1 0 V

Fail-Safe Operation 0.8 1.4 3 V

V

T+−VT−

Hysteresis (

Figure 1

) Normal Operation 0.8 3.3 6 V

Fail-Safe Operation 0 0.8 2.2 V

V

OH

High-Level Output Voltage I

OH

=

−400 µA, (

Figure 1

) 2.4 3.5 V

V

OL

Low-Level Output Voltage I

OL

=

16 mA, (

Figure 1

) 0.23 0.4 V

r

I

Input Resistance (

Figure 2

) ∆V

I

=

−25V to −14V 3 5 7 kΩ

∆V

I

=

−14V to −3V 3 5 7 kΩ

∆V

I

=

−3V to +3V 3 6 kΩ

∆V

I

=

3V to 14V 3 5 7 kΩ

∆V

I

=

14V to 25V 3 5 7 kΩ

V

I(OPEN)

Open-Circuit Input Voltage I

I

=

0, (

Figure 3

) 0 0.2 2 V

I

OS

Short-Circuit Output Current V

CC1

=

5.5V, V

I

=

−5V, (

Figure 4

) −10 −20 −40 mA

(Note 6)

I

CC1

Supply Current From V

CC1

V

CC1

=

5.5V, T

A

=

25˚C, (

Figure 5

)2035mA

I

CC2

Supply Current From V

CC2

V

CC2

=

13.2V, T

A

=

25˚C, (

Figure 5

)2340mA

Switching Characteristics

(V

CC1

=

5V, T

A

=

25˚C)

Symbol Parameter Conditions Min Typ Max Units

t

PLH

Propagation Delay Time, Low-to-High C

L

=

50 pF, R

L

=

390Ω,(

Figure 6

)22 ns

Level Output

t

PHL

Propagation Delay Time, High-to-Low C

L

=

50 pF, R

L

=

390Ω,(

Figure 6

)20 ns

Level Output

t

TLH

Transition Time, Low-to-High Level C

L

=

50 pF, R

L

=

390Ω,(

Figure 6

)9 ns

Output

t

THL

Transition Time, High-to-Low Level C

L

=

50 pF, R

L

=

390Ω,(

Figure 6

)6 ns

Output

Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. Except for “Operating TemperatureRange”they
are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” provides conditions for actual device operation.

Note 3: Unless otherwise specified min/max limits apply across the 0˚C to +70˚C range for the DS75154. All typical values are for T

A

=

25˚C and V

CC1

=

5V.

Note 4: All currents into device pins shown as positive, out of device pins as negative, all voltages referenced to ground unless otherwise noted. All values shown
as max or min on absolute value basis.

www.national.com 2

Switching Characteristics (Continued)

Note 5: The algebraic convention where the most-positive (least-negative) limit is designated as maximum is used in this data sheet for logic and threshold levels

only, e.g., when −3V is the maximum, the minimum limit is a more-negative voltage.

Note 6: Only one output at a time should be shorted.

Typical Performance Characteristics

Connection Diagram

Output Voltage vs Input Voltage

DS005795-10

Dual-In-Line Package

DS005795-2

Top View

Order Number DS75154M

See NS Package Number M16A

www.national.com3

DC Test Circuits and Truth Tables

DS005795-3

Test Measure A T Y V

CC1

V

CC2

(Pin 15) (Pin 16)

Open-Circuit Input V

OH

Open Open I

OH

4.5V Open

(Fail-Safe) V

OH

Open Open I

OH

Open 10.8V

V

T+

min, V

OH

0.8V Open I

OH

5.5V Open

V

T−

(Fail-Safe) V

OH

0.8V Open I

OH

Open 13.2V

V

T+

min (Normal) V

OH

(Note 7) Pin 15 I

OH

5.5V and T Open

V

OH

(Note 7) Pin 15 I

OH

T 13.2V

V

IL

max, V

OH

−3V Pin 15 I

OH

5.5V and T Open

V

T−

min (Normal) V

OH

−3V Pin 15 I

OH

T 13.2V

V

IH

min, VT+max, V

OL

3V Open I

OL

4.5V Open

V

T−

max (Fail-Safe) V

OL

3V Open I

OL

Open 10.8V

V

IH

min, VT+max, V

OL

3V Pin 15 I

OL

4.5V and T Open

(Normal) V

OL

3V Pin 15 I

OL

T 10.8V

V

T−

max (Normal) V

OL

(Note 8) Pin 15 I

OL

5.5V and T Open

V

OL

(Note 8) Pin 15 I

OL

T 13.2V

Note 7: Momentarily apply −5V, then 0.8V.
Note 8: Momentarily apply 5V, then ground.

FIGURE 1. VIH,VIL,VT+,VT−,VOH,V

OL

www.national.com 4

DC Test Circuits and Truth Tables (Continued)

DS005795-4

TV

CC1

V

CC2

(Pin 15) (Pin 16)

Open 5V Open
Open Gnd Open
Open Open Open

Pin 15 T and 5V Open

Gnd Gnd Open
Open Open 12V
Open Open Gnd

Pin 15 T 12V
Pin 15 T Gnd
Pin 15 T Open

FIGURE 2. r

I

DS005795-5

TV

CC1

V

CC2

(Pin 15) (Pin 16)

Open 5.5V Open

Pin 15 5.5V Open

Open Open 13.2V

Pin 15 T 13.2V

FIGURE 3. V

I(OPEN)

www.national.com5

DC Test Circuits and Truth Tables

(Continued)

AC Test Circuit and Switching Time Waveforms

DS005795-6

Each output is tested separately.

FIGURE 4. I

OS

DS005795-7

All four line receivers are tested simultaneously.

FIGURE 5. I

CC

DS005795-8

Note 1: The pulse generator has the following characteristics: Z

OUT

=50Ω,tW= 200 ns, duty cycle ≤ 20%.

Note 2: C

L

includes probe and jig capacitance.

DS005795-9

FIGURE 6.

www.national.com 6

7

Physical Dimensions inches (millimeters) unless otherwise noted

LIFE SUPPORT POLICY

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE­VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI­CONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or sys­tems which, (a) are intended for surgical implant into
the body, or (b) support or sustain life, and whose fail­ure to perform when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.

2. A critical component in any component of a life support
device or system whose failure to perform can be rea­sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.

National Semiconductor
Corporation

Americas
Tel: [phone]
Fax: [phone]
Email: [e-mail]

www.national.com

National Semiconductor
Europe

Fax: [phone]

Email: [e-mail]
Deutsch Tel: [phone]
English Tel: [phone]
Français Tel: [phone]
Italiano Tel: [phone]

National Semiconductor
Asia Pacific Customer
Response Group

Tel: [phone]
Fax: [phone]
Email: [e-mail]

National Semiconductor
Japan Ltd.

Tel: [phone]
Fax: [phone]

SO Package (M)

Order Number DS75154M

NS Package Number M16A

DS75154 Quad Line Receiver

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.