7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)

MIN

MAX

UNIT

VCC

Supply voltage(2)

41

V

VI

Amplifier input voltage

VCC + 0.3

V

VO

Collector output voltage

41

V

IO

Collector output current

250

mA

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

Tstg

Storage temperature range

–65

150

°C

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating

Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

All voltages are with respect to the network ground terminal.

7.2 ESD Ratings

MAX

UNIT

V(ESD)

Electrostatic discharge

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins

500

V

Charged device model (CDM), per JEDEC specification JESD22-

C101, all pins

200

7.3 Recommended Operating Conditions

MIN

MAX

UNIT

VCC

Supply voltage

7

40

V

VI

Amplifier input voltage

–0.3

VCC – 2

V

VO

Collector output voltage

40

V

Collector output current (each transistor)

200

mA

Current into feedback terminal

0.3

mA

fOSC

Oscillator frequency

1

300

kHz

CT

Timing capacitor

0.47

10000

nF

RT

Timing resistor

1.8

500

kΩ

TA

Operating free-air temperature

TL494C

0

70

°C

TL494I

–40

85

7.4 Thermal Information

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TL494

UNIT

D

DB

N

NS

PW

Rθ JA

Package thermal

impedance(1) (2)

73

82

67

64

108

°C/W

(1)

Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient

temperature is PD = (TJ(max) – TA) / θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.

(2)

The package thermal impedance is calculated in accordance with JESD 51-7.

TL494

SLVS074I – JANUARY 1983 – REVISED JULY 2022

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