參數資料
型號: 74FCT162841
廠商: Texas Instruments, Inc.
英文描述: 20-Bit Latches
中文描述: 20位鎖存
文件頁數: 3/6頁
文件大?。?/td> 60K
代理商: 74FCT162841
CY74FCT16841T
CY74FCT162841T
3
Output Drive Characteristics for CY74FCT16841T
Parameter
V
OH
Description
Test Conditions
Min.
2.5
2.4
2.0
Typ.
[5]
3.5
3.5
3.0
0.2
Max.
Unit
V
Output HIGH Voltage
V
CC
=Min., I
OH
=
3 mA
V
CC
=Min., I
OH
=
15 mA
V
CC
=Min., I
OH
=
32 mA
V
CC
=Min., I
OL
=64 mA
V
OL
Output LOW Voltage
0.55
V
Output Drive Characteristics for CY74FCT162841T
Parameter
I
ODL
I
ODH
V
OH
V
OL
Description
Test Conditions
Min.
60
60
2.4
Typ.
[5]
115
115
3.3
0.3
Max.
150
150
Unit
mA
mA
V
V
Output LOW Current
[7]
Output HIGH Current
[7]
Output HIGH Voltage
Output LOW Voltage
V
CC
=5V, V
IN
=V
IH
or V
IL
, V
OUT
=1.5V
V
CC
=5V, V
IN
=V
IH
or V
IL
, V
OUT
=1.5V
V
CC
=Min., I
OH
=
24 mA
V
CC
=Min., I
OL
=24 mA
0.55
Capacitance
[6]
(T
A
=+25C, f = 1.0 MHz)
Symbol
C
IN
C
OUT
Description
Conditions
Typ.
[5]
4.5
5.5
Max.
6.0
8.0
Unit
pF
pF
Input Capacitance
Output Capacitance
V
IN
= 0V
V
OUT
= 0V
Power Supply Characteristics
Parameter
I
CC
Description
Test Conditions
Min.
Typ.
[5]
5
Max.
500
Unit
μ
A
Quiescent Power Supply
Current
Quiescent Power Supply
Current (TTL inputs HIGH)
Dynamic Power Supply
Current
[10]
V
CC
=Max.
V
IN
<0.2V
V
IN
>V
CC
-0.2V
V
IN
=3.4V
[9]
I
CC
V
CC
=Max.,
0.5
1.5
mA
I
CCD
V
CC
=Max., One Input
Toggling, 50% Duty
Cycle, Outputs Open,
OE=GND
V
CC
=Max., f
1
=10 MHz,
50% Duty Cycle,
Outputs Open, One Bit
Toggling, OE=GND
LE = V
CC
V
CC
=Max., f
1
=2.5 MHz,
50%DutyCycle,Outputs
Open, Twenty Bits
Toggling, OE=GND
LE = V
CC
V
IN
=V
CC
or
V
IN
=GND
60
100
μ
A/MHz
I
C
Total Power Supply Current
[11]
V
IN
=V
CC
or
V
IN
=GND
V
IN
=3.4V or
V
IN
=GND
0.6
1.5
mA
0.9
2.3
V
IN
=V
CC
or
V
IN
=GND
V
IN
=3.4V or
V
IN
=GND
3.0
5.5
[12]
8.0
20.5
[12]
Notes:
9.
10. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
11. I
C
=
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.
12. Values for these conditions are examples of the I
CC
formula. These limits are specified but not tested.
Per TTL driven input (V
=3.4V); all other inputs at V
or GND.
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