TL7757

SUPPLY-VOLTAGE SUPERVISOR

AND PRECISION VOLTAGE DETECTOR

SLVS041I – SEPTEMBER 1991 – REVISED AUGUST 2003

3

POST OFFICE BOX 655303

recommended operating conditions

MIN

MAX

UNIT

VCC

Supply voltage

1

7

V

VOH

High-level output voltage

15

V

IOL

Low-level output current

20

mA

TA

Operating free-air temperature

TL7757C

0

70

°C

TA

Operating free-air temperature

TL7757I

–40

85

°C

electrical characteristics at specified free-air temperature

PARAMETER

TEST CONDITIONS

TA

TL7757C

UNIT

PARAMETER

TEST CONDITIONS

TA

MIN

TYP

MAX

UNIT

VIT–

Negative-going input threshold voltage at VCC

25

°C

4.43

4.55

4.67

V

VIT–

Negative-going input threshold voltage at VCC

0

°C to 70°C

4.4

4.7

V

Vhys†

Hysteresis at VCC

25

°C

40

50

60

mV

Vhys†

Hysteresis at VCC

0

°C to 70°C

30

70

mV

VOL

Low-level output voltage

IOL = 20 mA, VCC = 4.3 V

25

°C

0.4

0.8

V

VOL

Low-level output voltage

IOL = 20 mA, VCC = 4.3 V

0

°C to 70°C

0.8

V

IOH

High-level output current

VCC = 7 V,

VOH = 15 V,

25

°C

1

µA

IOH

High-level output current

VCC = 7 V,

See Figure 1

VOH = 15 V,

0

°C to 70°C

1

µA

Vres‡

Power-up reset voltage

RL = 2.2 kΩ,

25

°C

0.8

1

V

Vres‡

Power-up reset voltage

RL = 2.2 k ,

VCC slew rate ≤ 5 V/µs

0

°C to 70°C

1.2

V

I

Supply current

VCC = 4.3 V

25

°C

1400

2000

A

ICC

Supply current

VCC = 4.3 V

0

°C to 70°C

2000

µA

CC

VCC = 5.5 V

0

°C to 70°C

40

† This is the difference between positive-going input threshold voltage, VIT+, and negative-going input threshold voltage, VIT–.

‡ This is the lowest voltage at which RESET becomes active.

switching characteristics at specified free-air temperature

PARAMETER

TEST CONDITIONS

TA

TL7757C

UNIT

PARAMETER

TEST CONDITIONS

TA

MIN

TYP

MAX

UNIT

tPLH

Propagation delay time, low-to-high-level

VCC slew rate ≤ 5 V/µs,

25

°C

3.4

5

µs

tPLH

Propagation delay time, low-to-high-level

output

VCC slew rate 5 V/µs,

See Figures 2 and 3

0

°C to 70°C

5

µs

tPHL

Propagation delay time, high-to-low-level

See Figures 2 and 3

25

°C

2

5

µs

tPHL

Propagation delay time, high-to-low-level

output

See Figures 2 and 3

0

°C to 70°C

5

µs

tr

Rise time

VCC slew rate ≤ 5 V/µs,

25

°C

0.4

1

µs

tr

Rise time

VCC slew rate 5 V/µs,

See Figures 2 and 3

0

°C to 70°C

1

µs

tf

Fall time

See Figures 2 and 3

25

°C

0.05

1

µs

tf

Fall time

See Figures 2 and 3

0

°C to 70°C

1

µs

tw(min)

Minimum pulse duration at VCC for output

response

25

°C

5

µs

tw(min)

Minimum pulse duration at VCC for output

response

0

°C to 70°C

5

µs