TL7757_14 Datasheet, PDF (4/20 Pages) Texas Instruments – SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR

TL7757
SUPPLY-VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003
electrical characteristics at specified free-air temperature
PARAMETER
TEST CONDITIONS
TL7757I
T_A
MIN TYP MAX
V_IT− Negative-going input threshold voltage at V_CC
25°C
−40°C to 85°C
4.43 4.55 4.67
4.4
4.7
V_hys† Hysteresis at V_CC
25°C
−40°C to 85°C
40
50
60
30
70
V_OL Low-level output voltage
I_OL = 20 mA, V_CC = 4.3 V
25°C
−40°C to 85°C
0.4 0.8
0.8
I_OH High-level output current
V_CC = 7 V,
V_OH = 15 V,
See Figure 1
25°C
−40°C to 85°C
1
1
V_res‡ Power-up reset voltage
R_L = 2.2 kΩ,
V_CC slew rate ≤ 5 V/µs
25°C
−40°C to 85°C
0.8
1
1.2
I_CC
Supply current
V_CC = 4.3 V
25°C
−40°C to 85°C
1400 2000
2100
V_CC = 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
t_PLH
t_PHL
t_r
t_f
t_w(min)
PARAMETER
TEST CONDITIONS
T_A
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
Rise time
Fall time
Minimum pulse duration at V_CC for output
response
V_CC slew rate ≤ 5 V/µs,
See Figures 2 and 3
See Figures 2 and 3
V_CC 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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