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CD74HC137PWR датащи(PDF) 7 Page - Texas Instruments

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номер детали CD74HC137PWR
подробное описание детали  High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

CD74HC137PWR датащи(HTML) 7 Page - Texas Instruments

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7
HCT TYPES
Propagation Delay
An to any Y or Y
Address to Output
tPLH, tPHL CL = 50pF
4.5
-
-
38
-
48
-
57
ns
tPLH, tPHL CL = 15pF
5
-
16
-
-
-
-
-
ns
OE0 to any Y (HC137)
tPLH, tPHL CL = 50pF
4.5
-
-
35
-
44
-
53
ns
OE0 to any Y (HC237)
tPLH, tPHL CL = 50pF
4.5
-
-
33
-
41
-
60
ns
OE1 to any Y (HC137)
tTLH, tTHL CL = 50pF
4.5
-
-
37
-
46
-
56
ns
OE1 to any Y (HC237)
tTLH, tTHL CL = 50pF
4.5
-
-
35
-
44
-
53
ns
LE to any Y (HC137)
tTLH, tTHL CL = 50pF
4.5
-
-
44
-
55
-
66
ns
LE to any Y (HC237)
tTLH, tTHL CL = 50pF
4.5
-
-
42
-
53
-
63
ns
Power Dissipation
Capacitance, (Notes 3, 4)
CD74HC137
CPD
CL = 15pF
5
-
19
-
-
-
-
-
pF
’HC237
CPD
CL = 15pF
5
-
23
-
-
-
-
-
pF
Output Transition Time
tTLH, tTHL CL = 50pF
4.5
15
19
22
ns
Input Capacitance
CI
-
-
-
-
10
-
10
-
10
pF
NOTES:
3. CPD is used to determine the dynamic power consumption, per gate.
4. PD = VCC
2 f
i (CPD + CL) where: fi = Input Frequency, CL = Output Load Capacitance, VCC = Supply Voltage.
Switching Specifications Input tr, tf = 6ns (Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
VCC (V)
25oC
-40oC TO
85oC
-55oC TO 125oC
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
Test Circuits and Waveforms
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table. For fMAX, input duty cycle = 50%.
FIGURE 1. HC CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
NOTE: Outputs should be switching from 10% VCC to 90% VCC in
accordance with device truth table. For fMAX, input duty cycle = 50%.
FIGURE 2. HCT CLOCK PULSE RISE AND FALL TIMES AND
PULSE WIDTH
FIGURE 3. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
FIGURE 4. HCT TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
CLOCK
90%
50%
10%
GND
VCC
trCL
tfCL
50%
50%
tWL
tWH
10%
tWL + tWH =
fCL
I
CLOCK
2.7V
1.3V
0.3V
GND
3V
trCL = 6ns
tfCL = 6ns
1.3V
1.3V
tWL
tWH
0.3V
tWL + tWH =
fCL
I
tPHL
tPLH
tTHL
tTLH
90%
50%
10%
50%
10%
INVERTING
OUTPUT
INPUT
GND
VCC
tr = 6ns
tf = 6ns
90%
tPHL
tPLH
tTHL
tTLH
2.7V
1.3V
0.3V
1.3V
10%
INVERTING
OUTPUT
INPUT
GND
3V
tr = 6ns
tf = 6ns
90%
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237


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