TL7757 Datasheet, PDF (4/11 Pages) Texas Instruments – SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR

TL7757
SUPPLY-VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041E – SEPTEMBER 1991 – REVISED JULY 1999
electrical characteristics at specified free-air temperature
PARAMETER
TEST CONDITIONS
TL7757I
TA
MIN TYP MAX
VIT _– Negative-going input threshold voltage at VCC
25°C
–40°C to 85°C
4.43 4.55 4.67
4.4
4.7
Vhys† Hysteresis at VCC
25°C
–40°C to 85°C
40
50
60
30
70
VOL Low-level output voltage
25°C
IOL = 20 mA, VCC = 4.3 V _{–40°C to 85°C}
0.4 0.8
0.8
IOH High-level output current
VCC = 7 V, VOH = 15 V,
25°C
See Figure 1
–40°C to 85°C
1
1
Vres‡ Power-up reset voltage
RL = 2.2 kΩ,
VCC slew rate ≤ 5 V/µs
25°C
–40°C to 85°C
0.8
1
1.2
ICC Supply current
VCC = 4.3 V
25°C
–40°C to 85°C
1400 2000
2100
VCC = 5.5 V
–40°C to 85°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.}
UNIT
V
mV
V
µA
V
µA
switching characteristics at specified free-air temperature
PARAMETER
TEST CONDITIONS
TA
tPLH
tPHL
tr
tf
tw(min)
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
Rise time
Fall time
Minimum pulse duration at VCC for output
response
VCC slew rate ≤ 5 V/µs,
See Figures 2 and 3
See Figures 2 and 3
VCC slew rate ≤ 5 V/µs,
See Figures 2 and 3
See Figures 2 and 3
25°C
–40°C to 85°C
25°C
–40°C to 85°C
25°C
–40°C to 85°C
25°C
–40°C to 85°C
25°C
–40°C to 85°C
TL7757I
MIN TYP MAX
3.4
5
5
2
5
5
0.4
1
1
0.05
1
1
5
5
UNIT
µs
µs
µs
µs
µs
4
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