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Número de pieza | KK74ACT161 | |
Descripción | Presettable Counter High-Speed Silicon-Gate CMOS | |
Fabricantes | KODENSHI KOREA | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de KK74ACT161 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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Presettable Counter
High-Speed Silicon-Gate CMOS
The KK74ACT161 is identical in pinout to the LS/ALS161,
HC/HCT161. The KK74ACT161 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS Inputs.
The KK74ACT161 is programmable 4-bit synchronous modulo-16
counter that feature parallel Load, asynchronous Reset, a Carry Output for
cascading and count-enable controls.
The KK74ACT161 is binary counter with asynchronous Reset.
• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25° C
• Outputs Source/Sink 24 mA
LOGIC DIAGRAM
KK74ACT161
ORDERING INFORMATION
KK74ACT161N Plastic
KK74ACT161D SOIC
TA = -40° to 85° C for all packages
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
Reset Load Enable Enable Clock Q0 Q1 Q2 Q3
PT
Function
LX
X
X
X L L L L Reset to “0”
HL
X
X
P0 P1 P2 P3 Preset Data
HH
X
L
No change
No count
HH
L
X
No change
No count
HH
H
H
Count up
Count
HX
X
X
No change
No count
X=don’t care
P0,P1,P2,P3 = logic level of Data inputs
Ripple Carry Out = Enable T • Q0 • Q1 • Q2 • Q3
1
1 page KK74ACT161
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TIMING REQUIREMENTS (VCC=5.0V±10%, CL=50pF,Input tr=tf=3.0 ns)
Symbol
Parameter
tSU Minimum Setup Time, Preset Data Inputs to
Clock (Figure 4)
th Minimum Hold Time, Clock to Preset Data Inputs
(Figure 4)
tSU Minimum Setup Time,Load to Clock (Figure 4)
th Minimum Hold Time, Clock to Load (Figure 4)
tSU Minimum Setup Time, Enable T or Enable P to
Clock (Figure 5)
th Minimum Hold Time, Clock to Enable T or
Enable P (Figure 5)
tw Minimum Pulse Width, Clock (Load) (Figure 1)
tw Minimum Pulse Width, Clock (Count)(Figure 1)
tw Minimum Pulse Width, Reset (Figure 2)
trec Minimum Recovery Time, Reset to Clock (Figure
2)
Guaranteed Limit
+25° C
-40° C
to +85° C
9.5 11.5
00
8.5 9.5
-0.5 -0.5
5.5 6.5
00
3.0 3.5
3.0 3.5
3.0 7.5
0 0.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
5 Page |
Páginas | Total 9 Páginas | |
PDF Descargar | [ Datasheet KK74ACT161.PDF ] |
Número de pieza | Descripción | Fabricantes |
KK74ACT161 | Presettable Counter High-Speed Silicon-Gate CMOS | KODENSHI KOREA |
KK74ACT163 | Presettable Counters High-Speed Silicon-Gate CMOS | KODENSHI KOREA |
KK74ACT164 | 8-Bit Serial-Input/Parallel-Output Shift register High-Speed Silicon-Gate CMOS | KODENSHI KOREA |
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