TLC555
LinCMOS TIMER
SLFS043F − SEPTEMBER 1983 − REVISED FEBRUARY 2005
TYPICAL CHARACTERISTICS
PROPAGATION DELAY TIMES TO DISCHARGE
OUTPUT FROM TRIGGER AND THRESHOLD
SHORTED TOGETHER
vs
SUPPLY VOLTAGE
600
t PHL , t PLH − Propagation Delay Times − ns
VDD = 2 V, IO = 1 mA
IO(on)
≥
1 mA
CL
≈
0
TA = 25°C
DISCHARGE SWITCH ON-STATE RESISTANCE
vs
FREE-AIR TEMPERATURE
100
70
Discharge Switch On-State Resistance −
Ω
40
VDD = 5 V, IO = 10 mA
VDD = 15 V, IO = 100 mA
500
20
10
7
4
400
300
200
tPHL
tPLH†
2
1
−75 − 50
100
0
− 25
0
25
50
75
100
125
0
2
4
6
8
10
12
14 16
18 20
TA − Free-Air Temperature −
°C
VDD − Supply Voltage − V
† The effects of the load resistance on these values must be
taken into account separately.
Figure 1
Figure 2
APPLICATION INFORMATION
0.1
µF
RA
0.1
µF
4
7
RB
6
THRES
2
CT
TRIG
GND
1
GND
tPLH
TRIGGER AND THRESHOLD VOLTAGE WAVEFORM
VDD
tPHL
RL
3
Output
CL
1/3 VDD
2/3 VDD
tc(L)
tc(H)
5
8
CONT
VDD
RESET
TLC555
DISCH
OUT
Pin numbers shown are for all packages except the
FK package.
CIRCUIT
Figure 3. Astable Operation
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
9
TI [ TEXAS INSTRUMENTS ]
