Power Dissipation .......................................................... 1.0W
Description
Pin Description
Name
D
CLK
OE
O
Data Inputs
[2]
Clock Inputs
Three-State Output Enable Inputs (Active LOW)
Three-State Outputs
Operating Range
Range
Industrial
Ambient
Temperature
−40°C
to +85°C
V
CC
2.7V to3.6V
Electrical Characteristics for Non Bus Hold Devices
Over the Operating Range V
CC
=2.7V to 3.6V
Parameter
V
IH
V
IL
V
H
V
IK
I
IH
I
IL
I
OZH
I
OZL
I
OS
I
OFF
I
CC
∆I
CC
Description
Input HIGH Voltage
Input LOW Voltage
Input Hysteresis
[6]
Input Clamp Diode Voltage
Input HIGH Current
Input LOW Current
High Impedance Output Current
(Three-State Output pins)
High Impedance Output Current
(Three-State Output pins)
Short Circuit Current
[7]
Power-Off Disable
Quiescent Power Supply Current
Quiescent Power Supply Current
(TTL inputs HIGH)
V
CC
=Min., I
IN
=–18 mA
V
CC
=Max., V
I
=5.5
V
CC
=Max., V
I
=GND
V
CC
=Max., V
OUT
=5.5V
V
CC
=Max., V
OUT
=GND
V
CC
=Max., V
OUT
=GND
V
CC
=0V, V
OUT
≤4.5V
V
IN
≤0.2V,
V
IN
>V
CC
–0.2V
V
IN
=V
CC
–0.6V
[8]
V
CC
=Max.
V
CC
=Max.
0.1
2.0
–60
–135
100
–0.7
–1.2
±1
±1
±1
±1
–240
±100
10
30
Test Conditions
All Inputs
Min.
2.0
Typ.
[5]
Max.
5.5
0.8
Unit
V
V
mV
V
µA
µA
µA
µA
mA
µA
µA
µA
Notes:
1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. Z = HIGH Impedance.
= LOW-to-HIGH Transition.
2. On the CY74FCT163H374 & CY74FCT163LDH374 these pins have “bus hold.”
3. Operation beyond the limits set forth may impair the useful life of the device. Unless otherwise noted, these limits are over the operating free-air temperature
range.
4. Unused inputs must always be connected to an appropriate logic voltage level, preferably either V
CC
or ground
5. Typical values are at V
CC
=3.3V, T
A
= +25°C ambient.
6. This parameter is guaranteed but not tested.
7. Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample
and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parametric tests. In any sequence of parameter
tests, I
OS
tests should be performed last.
8. Per TTL driven input; all other inputs at V
CC
or GND.
2
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
Electrical Characteristics For Bus Hold Devices
Over the Operating Range V
CC
=2.7V to 3.6V
Parameter
V
IH
V
IL
V
H
V
IK
I
IH
I
IL
I
BBH
I
BBL
I
BHHO
I
BHLO
I
OZH
I
OZL
I
OS
I
OFF
I
CC
∆
ICC
Description
Input HIGH Voltage
Input LOW Voltage
Input Hysteresis
[6]
Input Clamp Diode Voltage
Input HIGH Current
Input LOW Current
Bus Hold Sustain Current on Bus Hold Input
[9]
V
CC
=Min.
V
I
=2.0V
V
I
=0.8V
Bus Hold Overdrive Current on Bus Hold Input
[9]
V
CC
=Max., V
I
=1.5V
High Impedance Output Current
(Three-State Output pins)
High Impedance Output Current
(Three-State Output pins)
Short Circuit Current
[7]
Power-Off Disable
Quiescent Power Supply Current
Quiescent Power supply Current
(TTL inputs HIGH)
V
CC
=Max., V
OUT
=V
CC
V
CC
=Max., V
OUT
=GND
V
CC
=Max., V
OUT
=GND
V
CC
=0V, V
OUT
≤4.5V
V
IN
<0.2V
V
CC
=Max.
V
IN
=V
CC
–0.6V
[8]
V
CC
=Max.
–60
–135
–50
+50
±500
±1
±1
–240
±100
+40
+350
V
CC
=Min., I
IN
=–18 mA
V
CC
=Max., V
I
=V
CC
100
–0.7
– 1.2
±100
±100
Test Conditions
All Inputs
Min.
2.0
Typ.
[5]
Max.
V
CC
0.8
Unit
V
V
mV
V
µA
µA
µA
µA
µA
µA
µA
mA
µA
µA
µA
Electrical Characteristics For Balanced Drive Devices
Over the Operating Range V
CC
=2.7V to 3.6V
Parameter
I
ODL
I
ODH
V
OH
Description
Output LOW Dynamic Current
[7]
Output HIGH Dynamic Current
[7]
Output HIGH Voltage
Test Conditions
V
CC
=3.3V, V
IN
=V
IH
or V
IL
, V
OUT
=1.5V
V
CC
=3.3V, V
IN
=V
IH
or V
IL
, V
OUT
=1.5V
V
CC
=Min., I
OH
= –0.1 mA
V
CC
=Min., I
OH
= –8 mA
V
CC
=3.0V, I
OH
= –24 mA
V
OL
Output LOW Voltage
V
CC
=Min., I
OL
= 0.1mA
V
CC
=Min., I
OL
= 24 mA
0.3
Min.
45
–45
V
CC
–0.2
2.4
[10]
2.0
3.0
3.0
0.2
0.55
Typ.
[5]
Max.
110
–110
Unit
mA
mA
V
V
V
V
Electrical Characteristics For Lite Drive Devices
Over the Operating Range V
CC
=3.0V to 3.6V
Parameter
I
ODL
I
ODH
V
OH
V
OL
Description
Output LOW Dynamic Current
[7]
Output HIGH Dynamic Current
[7]
Output HIGH Voltage
Output LOW Voltage
Test Conditions
V
CC
=3.3V, V
IN
=V
IH
or V
IL
, V
OUT
=1.5V
V
CC
=3.3V, V
IN
=V
IH
or V
IL
, V
OUT
=1.5V
V
CC
=3.0 V, I
OH
= –6 mA
V
CC
=3.0 V, I
OL
= 6 mA
Min.
15.0
–15.0
2.4
3.0
0.55
Typ.
[5]
Max.
45
–45
Unit
mA
mA
V
V
Notes:
9. Pins with bus hold are described in Pin Description.
10. V
OH
=V
CC
–0.6V at rated current.
3
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
Capacitance
[6]
(T
A
= +25°C, f = 1.0 MHz)
Parameter
C
IN
C
OUT
Description
Input Capacitance
Output Capacitance
V
IN
= 0V
V
OUT
= 0V
Test Conditions
Typ.
[5]
4.5
5.5
Max.
6.0
8.0
Unit
pF
pF
Power Supply Characteristics
Parameter
I
CCD
Description
Dynamic Power Supply
Current
[11]
Total Power Supply
Current
[12]
Test Conditions
V
CC
=Max., One Input Toggling, V
IN
=V
CC
or
50% Duty Cycle,
V
IN
=GND
Outputs Open, OE=GND
V
CC
=Max., f
1
=10 MHz, 50%
V
IN
=V
CC
or
Duty Cycle, Outputs Open, One V
IN
=GND
Bit Toggling, OE=GND
V
IN
=V
CC
–0.6V or
V
IN
=GND
V
CC
=Max., f
1
=2.5 MHz, 50%
V
IN
=V
CC
or
Duty Cycle, Outputs Open, Six- V
IN
=GND
teen Bits Toggling, OE=GND
V
IN
=V
CC
–0.6V or
V
IN
=GND
Typ.
[5]
50
Max.
75
Unit
µA/MHz
I
C
0.5
0.5
2.0
2.0
0.8
0.8
3.0
[13]
3.3
[13]
mA
mA
mA
mA
Switching Characteristics
Over the Operating Range
V
CC
=3.0V to 3.6V
[14,15]
CY74FCT163374A
CY74FCT163H374A
Parameter
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SU
t
H
t
SK(O)
Description
Propagation Delay Clock to
Output
Output Enable Time
Output Disable Time
Input Setup time
Input Hold time
Output Skew
[17]
Min.
1.5
1.5
1.5
2.0
1.5
-
0.5
Max.
6.5
6.5
5.5
CY74FCT163374C
CY74FCT163H374C
Min.
1.5
1.5
1.5
2.0
1.5
-
0.5
Max.
5.2
5.5
5.0
Unit
ns
ns
ns
ns
ns
ns
Fig. No.
[16]
1, 3
1, 7, 8
1, 7, 8
1, 4
1. 4
—
Notes:
11. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
= I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
12. I
C
I
C
= I
CC
+∆I
CC
D
H
N
T
+I
CCD
(f
0
/2 + f
1
N
1
)
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
H
I
CCD
= Dynamic Current caused by an input transition pair (HLH or LHL)
f
0
= Clock frequency for registered devices, otherwise zero
= Input signal frequency
f
1
N
1
= Number of inputs changing at f
1
All currents are in milliamps and all frequencies are in megahertz.
13. Values for these conditions are examples of the I
CC
formula. These limits are guaranteed but not tested.
14. Minimum limits are guaranteed but not tested on Propagation Delays.
15. For V
CC
=2.7, propagation delay, output enable and output disable times should be degraded by 20%.
16. See “Parameter Measurement Information” in the General Information section.
17. Skew between any two outputs of the same package switching in the same direction. This parameter is guaranteed by design.
4
CY74FCT163374
CY74FCT163H374
CY74FCT163LD374
CY74FCT163LDH374
Switching Characteristics
Over the Operating Range V
CC
=3.0V to 3.6V
[14,15]
CY74FCT163LD374
[18]
CY74FCT163LDH374
Parameter
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SU
t
H
t
SK(O)
Description
Propagation Delay Clock to
Q Output
Output Enable Time
Output Disable Time
Input Setup time
Input Hold time
Output Skew
[17]
Min.
1.5
1.5
1.5
2.0
1.5
0.5
Max.
10
12.5
8.0
CY74FCT163LD374A
[18]
CY74FCT163LDH374A
Min.
1.5
1.5
1.5
2.0
1.5
0.5
Max.
6.5
6.5
5.5
Unit
ns
ns
ns
ns
ns
ns
Fig. No.
[16]
1, 3
1, 7, 8
1, 7, 8
1, 4
1, 4
—
Note:
18. For Lite Drive devices the load capacitance is 30 pF. For all others it is 50 pF.
当今的计算机外部设备，都在追求高速度和高通用性。为了满足用户的需求，以Intel为首的七家公司于1994年推出了USB（Universal Serial Bus，通用串行总线）总线协议，专用于低、中速的计算机外设。目前，USB端口已成为微机主板的标准端口；而在不久的将来，所有的微机外设，包括键盘、鼠标、显示器、打印机、数字相机、扫描仪和游戏柄等等，都将通过USB与主机相连。
...[详细]
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