TLC551 Datasheet, PDF (9/16 Pages) Texas Instruments – LinCMOSE TIMERS

TLC551, TLC551Y
LinCMOS™ TIMERS
SLFS044B – FEBRUARY 1984 – REVISED SEPTEMBER 1997
electrical characteristics at V_DD = 5 V, T_A = 25°C
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VIT
IIT
VI(TRIG)
Threshold voltage
Threshold current
Trigger voltage
2.8
3.3 3.8 V
10
pA
1.36 1.66 1.96 V
II(TRIG)
Trigger current
10
pA
VI(RESET)
II(RESET)
Reset voltage
Reset current
Control voltage (open circuit) as a percentage of supply voltage
0.4
1.1 1.5 V
10
pA
66.7%
Discharge switch on-state voltage
Discharge switch off-state current
IOL = 10 mA
0.14 0.5 V
0.1
nA
VOH
High-level output voltage
IOH = – 1 mA
4.1
4.8
V
IOL = 8 mA
0.21 0.4
VOL
Low-level output voltage
IOL = 5 mA
0.13 0.3 V
IOL = 3.2 mA
0.08 0.3
IDD
Supply current
See Note 2
170 350 µA
NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or to TRIG.
TYPICAL CHARACTERISTICS
DISCHARGE SWITCH ON-STATE RESISTANCE
vs
FREE-AIR TEMPERATURE
100
70
VDD = 2 V, IO = 1 mA
40
VDD = 5 V, IO = 10 mA
20
10
7
VDD = 15 V, IO = 100 mA
4
2
1
0
25
50
75
100
TA – Free-Air Temperature – °C
Figure 1
PROPAGATION DELAY TIMES (TO DISCHARGE
OUTPUT FROM TRIGGER AND THRESHOLD
SHORTED TOGETHER)
vs
SUPPLY VOLTAGE
600
IO(on) ≥ 1 mA
CL ≈ 0
500
TA = 25°C
400
300
200
tPHL
tPLH‡
100
0
02
4 6 8 10 12 14 16 18 20
VDD – Supply Voltage – V
‡ _{The effects of the load resistance on these values must be}
taken into account separately.
Figure 2
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