參數(shù)資料
型號： CY74FCT273TLCC
廠商： Texas Instruments, Inc.
英文描述： 8-Bit Register
中文描述： 8位寄存器
文件頁數(shù)： 3/7頁
文件大小： 78K
代理商： CY74FCT273TLCC
CY54/74FCT273T
3
Power Supply Characteristics
Parameter
I
CC
I
CC
Description
Test Conditions
Typ.
[5]
0.1
0.5
Max.
0.2
2.0
Unit
mA
mA
Quiescent Power Supply Current
Quiescent Power Supply Current
(TTL inputs HIGH)
Dynamic Power Supply Current
[9]
V
CC
=Max., V
IN
≤
0.2V, V
IN
≥
V
CC
-0.2V
V
CC
=Max., V
IN
=3.4V, f
1
=0, Outputs Open
[8]
I
CCD
V
CC
=Max., One Bit Toggling, 50% Duty Cycle,
Outputs Open, MR=V
CC
,
V
IN
≤
0.2V or V
IN
≥
V
CC
-0.2V
V
CC
=Max., f
0
=10 MHz, 50% Duty Cycle,
Outputs Open, One Bit Toggling at f
1
=5 MHz,
MR=V
CC
, V
IN
≤
0.2V or V
IN
≥
V
CC
-0.2V
V
CC
=Max., f
0
=10 MHz, 50% Duty Cycle,
Outputs Open, One Bit Toggling at f
1
=5 MHz,
MR=V
CC
, V
IN
=3.4V or V
IN
=GND
V
CC
=Max., f
0
=10 MHz, 50% Duty Cycle,
Outputs Open, Eight Bits Toggling
at f
1
=2.5MHz, MR=V
CC
,
V
IN
≤
0.2V or V
IN
≥
V
CC
-0.2V
V
CC
=Max., f
0
=10 MHz, 50% Duty Cycle,
Outputs Open, Eight Bits Toggling
at f
1
=2.5 MHz, MR=V
CC
,
V
IN
=3.4V or V
IN
=GND
0.06
0.12
mA/MHz
I
C
Total Power Supply Current
[10]
0.7
1.4
mA
1.2
3.4
mA
1.6
3.2
[11]
mA
3.9
12.2
[11]
mA
Notes:
8.
9.
10. I
C
Per TTL driven input (V
=3.4V); all other inputs at V
or GND.
This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
= I
QUIESCENT
+ I
INPUTS
+ I
I
C
= I
D
N
(f
/2 + f
N
)
I
CC
= Quiescent Current with CMOS input levels
I
CC
= Power Supply Current for a TTL HIGH input (V
IN
=3.4V)
D
H
= Duty Cycle for TTL inputs HIGH
N
T
= Number of TTL inputs at D
I
CCD
= Dynamic Current caused by an input transition pair (HLH or LHL)
f
0
= Clock frequency for registered devices, otherwise zero
f
1
= Input signal frequency
N
= Number of inputs changing at f
All currents are in milliamps and all frequencies are in megahertz.
11. Values for these conditions are examples of the I
CC
formula. These limits are specified but not tested.
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