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MM54C923 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # MM54C923
Description  16, 20-Key Encoder
PDF  10 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

MM54C923 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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DC Electrical Characteristics
MinMax limits apply across temperature range unless otherwise specified (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
OUTPUT DRIVE (See 54C74C Family Characteristics Data Sheet) (Short Circuit Current)
ISOURCE
Output Source Current
VCC e 5V VOUT e 0V
b
175
b
33
mA
(P-Channel)
TA e 25 C
ISOURCE
Output Source Current
VCC e 10V VOUT e 0V
b
8
b
15
mA
(P-Channel)
TA e 25 C
ISINK
Output Sink Current
VCC e 5V VOUT e VCC
175
36
mA
(N-Channel)
TA e 25 C
ISINK
Output Sink Current
VCC e 10V VOUT e VCC
816
mA
(N-Channel)
TA e 25 C
AC Electrical Characteristics TA e 25 C CL e 50 pF unless otherwise noted
Symbol
Parameter
Conditions
Min
Typ
Max
Units
tpd0 tpd1
Propagation Delay Time to
CL e 50 pF (Figure 1)
Logical ‘‘0’’ or Logical ‘‘1’’
VCC e 5V
60
150
ns
from DA
VCC e 10V
35
80
ns
VCC e 15V
25
60
ns
t0H t1H
Propagation Delay Time from
RL e 10k CL e 10 pF (Figure 2)
Logical ‘‘0’’ or Logical ‘‘1’’
VCC e 5V RL e 10k
80
200
ns
into High Impedance State
VCC e 10V CL e 10 pF
65
150
ns
VCC e 15V
50
110
ns
tH0 tH1
Propagation Delay Time from
RL e 10k CL e 50 pF (Figure 2)
High Impedance State to a
VCC e 5V RL e 10k
100
250
ns
Logical ‘‘0’’ or Logical ‘‘1’’
VCC e 10V CL e 50 pF
55
125
ns
VCC e 15V
40
90
ns
CIN
Input Capacitance
Any Input (Note 2)
5
75
pF
COUT
TRI-STATE Output Capacitance
Any Output (Note 2)
10
pF
AC Parameters are guaranteed by DC correlated testing
Note 1
‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed Except for ‘‘Operating Temperature Range’’
they are not meant to imply that the devices should be operated at these limits The table of ‘‘Electrical Characteristics’’ provides conditions for actual device
operation
Note 2
Capacitance is guaranteed by periodic testing
Switching Time Waveforms
TLF6037 – 3
T1
T2
RC T3
07 RC where R
10k and C is external capacitor at KBM input
FIGURE 1
TLF6037 – 4
FIGURE 2
3



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