Absolute Maximum Ratings (Note 1)

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

Supply Voltage (VCC)

a12V

Input Voltage (DE, RE*, & DI)

b0.5V to (VCC a0.5V)

Common Mode (VCM)

 

Driver Output/Receiver Input

g15V

Input Voltage (DO/RI, DO*/RI*)

g14V

Receiver Output Voltage

b0.5V to (VCC a0.5V)

Maximum Package Power Dissipation

@ a25§C

9.5 mW/§C above a25§C

M Package 1190 mW, derate

N Package 744 mW, derate

6.0 mW/§C above a25§C

Storage Temperature Range

 

b65§C to a150§C

Lead Temperature (Soldering 4 sec)

a260§C

Recommended Operating

Conditions

 

Min

Typ

Max

Units

Supply Voltage (VCC)

a4.75

a5.0

a5.25

V

Bus Voltage

b7

 

a12

V

Operating Free Air Temperature (Ta)

 

 

DS36C278T

b40

25

a85

§C

DS36C278

0

25

a70

§C

Electrical Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (Notes 2 and 3)

Symbol

Parameter

Conditions

Reference

Min

Typ

Max

Units

 

 

 

 

 

 

 

 

 

DIFFERENTIAL DRIVER CHARACTERISTICS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VOD1

Differential Output Voltage

IO e 0 mA (No Load)

(422)

1.5

 

5.0

V

VOD0

Output Voltage

IO e 0 mA

0

 

5.0

V

(485)

 

VOD0*

Output Voltage

(Output to GND)

0

 

5.0

V

 

 

 

VOD2

Differential Output Voltage

RL e 50X

(422)

Figure 1

2.0

2.8

 

V

 

(Termination Load)

RL e 27X

(485)

1.5

2.3

5.0

V

 

 

 

 

 

DVOD2

Balance of VOD2

RL e 27X or 50X

(Note 4)

b0.2

0.1

a0.2

V

 

lVOD2 b VOD2*l

 

(422, 485)

 

 

 

 

 

 

VOD3

Differential Output Voltage

R1 e 54X, R2 e 375X

Figure 2

1.5

2.0

5.0

V

 

(Full Load)

VTEST e b7V to a12V

 

 

 

 

 

 

 

VOC

Driver Common Mode

RL e 27X

(485)

Figure 1

0

 

3.0

V

 

Output Voltage

RL e 50X

(422)

0

 

3.0

V

 

 

 

 

 

 

 

DVOC

Balance of VOC

RL e 27X or

(Note 4)

b0.2

 

a0.2

V

 

lVOC b VOC*l

RL e 50X

(422, 485)

 

 

 

 

 

 

IOSD

Driver Output Short-Circuit

VO e a12V

(485) Figure 4

 

200

a250

mA

 

Current

VO e b7V

(485)

 

b190

b250

mA

 

 

 

RECEIVER CHARACTERISTICS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VTH

Differential Input High

VO e VOH, IO e b0.4V

 

 

 

a0.035

a0.2

V

 

Threshold Voltage

b7V s VCM s a12V

(Note 5)

 

 

 

 

 

 

VTL

Differential Input Low

VO e VOL, IO e 0.4 mA

(422, 485)

b0.2

b0.035

 

 

 

 

 

V

 

Threshold Voltage

b7V s VCM s a12V

 

 

 

 

 

 

 

 

 

 

VHST

Hysteresis

VCM e 0V

(Note 6)

 

70

 

mV

RIN

Input Resistance

b7V s VCM s a12V

DS36C278T

24

68

 

kX

RIN

Input Resistance

b7V s VCM s a12V

DS36C278

48

68

 

kX

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National DS36C278 manual Absolute Maximum Ratings Note, Recommended Operating Conditions, Electrical Characteristics

DS36C278 specifications

The National DS36C278 is a versatile and highly regarded dual/quad operational amplifier that has garnered attention for its impressive performance in various applications. As a member of the DS series, the DS36C278 integrates multiple features and technologies designed to meet the demands of both consumer and industrial electronics.

One of the main features of the DS36C278 is its high-speed operation. It boasts a wide bandwidth and fast slew rates, which make it suitable for applications requiring rapid signal processing. The amplifier typically operates with a bandwidth of up to 16 MHz, allowing it to handle high-frequency signals with ease. Its slew rate can reach up to 9 V/µs, ensuring quick transitions and faithful signal reproduction, ideal for video and audio applications.

The DS36C278 is designed for versatility, allowing it to function as either a dual or quad amplifier. This flexibility enables designers to streamline layouts and reduce component counts in their circuit designs, ultimately saving space on printed circuit boards. The dual and quad configuration is particularly beneficial in modular systems where multiple signal paths are required.

Another defining characteristic of the DS36C278 is its low noise operation. With a low input-referred noise density, this amplifier excels in applications where signal integrity is paramount. The design effectively minimizes distortion and interference, making it suitable for precision instrumentation and sensitive audio applications.

The device operates on a wide supply voltage range, typically from ±4.5 to ±15 volts, making it compatible with different power supply standards. This flexibility enhances its applicability in various contexts, from handheld devices to stationary equipment.

Furthermore, the DS36C278 is characterized by its thermal stability. The amplifier features a construction that reduces susceptibility to temperature fluctuations, allowing consistent performance across varying environmental conditions. This characteristic is crucial for industrial applications where temperature controls may be less stringent.

In summary, the National DS36C278 is a high-performance operational amplifier featuring dual/quad capabilities, high speed, low noise operation, and robust thermal stability. Its wide supply voltage range adds to its adaptability, making it a valuable component in numerous electronic designs, from consumer electronics to industrial applications. With its blend of features and technologies, the DS36C278 continues to be a preferred choice for engineers and designers seeking reliable amplification solutions.