TL7757

SUPPLY-VOLTAGE SUPERVISOR

AND PRECISION VOLTAGE DETECTOR

SLVS041E – SEPTEMBER 1991 – REVISED JULY 1999

5

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

TL7757Y

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIT –

Negative-going input threshold voltage at VCC

4.55

V

Vhys†

Hysteresis at VCC

50

mV

VOL

Low-level output voltage

IOL = 20 mA, VCC = 4.3 V

0.4

V

IOH

High-level output current

VCC = 7 V,

VOH = 15 V, See Figure 1

µA

Vres‡

Power-up reset voltage

RL = 2.2 kΩ,

VCC slew rate ≤ 5 V/µs

0.8

V

ICC

Supply current

VCC = 4.3 V

1400

µA

ICC

Supply current

VCC = 5.5 V

µA

† 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.

PARAMETER

TEST CONDITIONS

TL7757Y

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH

Propagation delay time, low-to-high-level output

VCC slew rate ≤ 5 V/µs,

See Figures 2 and 3

3.4

µs

tPHL

Propagation delay time, high-to-low-level output

See Figures 2 and 3

2

µs

tr

Rise time

VCC slew rate ≤ 5 V/µs,

See Figures 2 and 3

0.4

µs

tf

Fall time

See Figures 2 and 3

0.05

µs