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LM2240 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM2240
Descripción Electrónicos  Programmable Timer/Counter
PDF  10 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2240 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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Electrical Characteristics
TA ea25 C VCC ea50V R e 10 kX C e01 mF unless otherwise specified See Block Diagram
Symbol
Characteristic
Conditions
Min
Typ
Max
Units
TRIGGERRESET CONTROLS
VTR
Trigger Threshold
Measured at Pin 11
14
20
V
VRS e 0V
ITR
Trigger Current
VRS e 0V VTR e 20V
10
m
A
ZT
Trigger Impedance
25
kX
tRSPT
Trigger Response Time
10
m
s
(Note 7)
VRS
Reset Threshold
Measured at Pin 10 VTR e 0V
14
20
V
IR
Reset Current
VTR e 0V VRS e 20V
10
m
A
ZR
Reset Impedance
25
kX
tRSPT
Reset Response Time
08
m
s
(Note 7)
COUNTER
TRMAX
Max Toggle Rate
Measured at Pin 14
15
MHz
VRS e 0V VTR e 50V
ZI
Input Impedance
20
kX
VTH
Input Threshold
10
14
V
tr
Output Rise Time
Measured at Pins 1 through 8
180
ns
tf
Output Fall Time
RL e 30 kX CL e 10 pF
180
I
O
b
Sink Current
VOL s 04V
20
40
mA
ICEX
Leakage Current
VOH e 15V
001
15
m
A
Note 7
Propagation delay from application of trigger or reset input to corresponding state change in counter output at Pin 1
Block Diagram
TLH10837 – 2
3



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