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參數(shù)資料
| 型號(hào)： | IDT74FCT161TDB |
| 廠(chǎng)商： | Integrated Device Technology, Inc. |
| 元件分類(lèi)： | 通用總線(xiàn)功能 |
| 英文描述： | FAST CMOS SYNCHRONOUS PRESETTABLE BINARY COUNTERS |
| 中文描述： | 快速CMOS同步預(yù)置二進(jìn)制計(jì)數(shù)器 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大?。?/td> | 94K |
| 代理商： | IDT74FCT161TDB |
IDT54/74FCT161T/AT/CT, IDT54/74FCT163T/AT/CT
FAST CMOS SYNCHRONOUS PRESETTABLE BINARY COUNTERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
6.7
4
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
I
CC
Quiescent Power Supply Current
TTL Inputs HIGH
I
CCD
Dynamic Power Supply Current
(4)
Test Conditions
(1)
Min.
—
Typ.
(2)
0.5
Max.
2.0
Unit
mA
V
CC
= Max.
V
IN
= 3.4V
(3)
V
CC
= Max., Outputs Open
Load Mode
CEP = CET =
PE
= GND
MR
or
SR
= V
CC
One Input Toggling
50% Duty Cycle
V
CC
= Max., Outputs Open
Load Mode
f
CP
= 10MHz
50% Duty Cycle
CEP = CET =
PE
= GND
MR
or
SR
= V
CC
One Bit Toggling
at f
i
= 5MHz
50% Duty Cycle
V
CC
= Max., Outputs Open
Load Mode
f
CP
= 10MHz
50% Duty Cycle
CEP = CET =
PE
= GND
MR
or
SR
= V
CC
Four Bits Toggling
at f
i
= 5MHz
50% Duty Cycle
V
IN
= V
CC
V
IN
= GND
—
0.15
0.25
mA/
MHz
I
C
Total Power Supply Current
(6)
V
IN
= V
CC
V
IN
= GND
—
1.5
3.5
mA
V
IN
= 3.4V
V
IN
= GND
—
2.0
5.5
V
IN
= V
CC
V
IN
= GND
—
3.8
7.3
(5)
V
IN
= 3.4V
V
IN
= GND
—
5.0
12.3
(5)
2611 tbl 06
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25
°
C ambient.
3. Per TTL driven input (V
IN
= 3.4V). All other inputs at V
CC
or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the I
CC
formula. These limits are guaranteed but not tested.
6. I
C
= I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
I
CC
D
H
N
T
+ I
CCD
(f
CP/
2 + f
i
N
i
)
I
CC
= Quiescent Current
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
H
I
CCD
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
i
= Input Frequency
N
i
= Number of Inputs at f
i
All currents are in milliamps and all frequencies are in megahertz.
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