LM494 datasheet(3/8 Pages) NSC

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LM494

Electrical Characteristics TA e 0 Cto a70 C for the LM494C TA eb40 Cto a85 C for the LM494I

VCC e 15V fOSC e 10 kHz unless otherwise specified (Continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

PWM COMPARATOR SECTION

(Figure 9)

VTHI

Inhibit Threshold Voltage

Zero Duty Cycle

IOb

Output Sink Current

05V s V3 s 35V

(Note 4)

IOa

Output Source Current

05V s V3 s 35V

(Note 4)

OUTPUT SECTION

VCE(sat)

Output Saturation

VE e 0V

0 C s TA s a70 C

Voltage Common Emitter

IC e 200 mA

40 C s TA s a85 C

Configuration

(Figure 3)

Emitter Follower

VC e 15V IE e 200 mA

Configuration

(Figure 4)

IC(off)

Collector Off-State Current

VCC e 40V VCE e 40V

100

IE(off)

Emitter Off-State Current

VCC e VC e 40V

0 C s TA s a70 C

100

VE e 0

40 C s TA s a85 C

OUTPUT CONTROL

(Figure 6)

VOCL

Output Control Voltage

Required for Single Ended or

Parallel Output Operation

VOCH

Output Control Voltage

Required for Push-Pull

Operation

TOTAL DEVICE

ICC

Standby Power Supply Current

OUTPUT AC CHARACTERISTICS

Use Recommended Operating Conditions with TA e 25 C

Rise Time of Output Voltage

Common Emitter Configuration

100

200

(Figure 3)

Emitter Follower Configuration

100

200

(Figure 4)

Fall Time of Output Voltage

Common Emitter Configuration

100

(Figure 3)

Emitter Follower Configuration

100

(Figure 4)

Note 1

TJ Max e 150 C for the Molded DIP and 175 C for the Ceramic DIP

Note 2

Ratings apply to ambient temperature at 25 C Above this temperature derate the 16L-Ceramic DIP at 10 mW C and the 16L-Molded DIP at 83 mW C

Note 3

Selected devices with tightened tolerance reference voltage available

Note 4

These limits apply when the voltage measured at Lead 3 is within the range specified

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