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CY74FCT2646T 数据表(PDF) 4 Page - Texas Instruments

部件名 CY74FCT2646T
功能描述  8-Bit Registered Transceiver
Download  7 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CY74FCT2646T 数据表(HTML) 4 Page - Texas Instruments

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CY74FCT2646T
4
Capacitance[7]
Parameter
Description
Typ.[6]
Max.
Unit
CIN
Input Capacitance
6
10
pF
COUT
Output Capacitance
8
12
pF
Power Supply Characteristics
Parameter
Description
Test Conditions
Typ.[6]
Max.
Unit
ICC
Quiescent Power Supply Current
VCC=Max., VIN≤0.2V,
VIN≥VCC–0.2V
0.1
0.2
mA
∆I
CC
Quiescent Power Supply Current
(TTL inputs HIGH)
VCC=Max., VIN=3.4V,
[9]
f1=0, Outputs Open
0.5
2.0
mA
ICCD
Dynamic Power Supply Current[10]
VCC=Max., One Input Toggling,
50% Duty Cycle, Outputs Open,
G=DIR=GND, GAB=GBA=GND,
VIN≤0.2V or VIN≥VCC–0.2V
0.06
0.12
mA/
MHz
IC
Total Power Supply Current[11]
VCC=Max., f0=10 MHz,
50% Duty Cycle, Outputs Open,
One Bit Toggling at f1=5 MHz,
G=DIR=GND, GAB=GBA=GND,
VIN≤0.2V or VIN≥VCC–0.2V
0.7
1.4
mA
VCC=Max., f0=10 MHz,
50% Duty Cycle, Outputs Open,
One Bit Toggling at f1=5 MHz,
G=DIR=GND, GAB=GBA=GND,
VIN=3.4V or VIN=GND
1.2
3.4
mA
VCC=Max., f0=10 MHz,
50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f1=5 MHz,
G=DIR=GND, GAB=GBA=GND,
VIN≤0.2V or VIN≥VCC–0.2V
2.8
5.6[12]
mA
VCC=Max., f0=10 MHz,
50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f1=5 MHz,
G=DIR=GND, GAB=GBA=GND,
VIN=3.4V or VIN=GND
5.1
14.6[12]
mA
Notes:
9.
Per TTL driven input (VIN=3.4V); all other inputs at VCC or GND.
10. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
11. IC
=IQUIESCENT + IINPUTS + IDYNAMIC
IC
=ICC+∆ICCDHNT+ICCD(f0/2 + f1N1)
ICC
= Quiescent Current with CMOS input levels
∆I
CC
= Power Supply Current for a TTL HIGH input (VIN=3.4V)
DH
= Duty Cycle for TTL inputs HIGH
NT
= Number of TTL inputs at DH
ICCD = Dynamic Current caused by an input transition pair (HLH or LHL)
f0
= Clock frequency for registered devices, otherwise zero
f1
= Input signal frequency
N1
= Number of inputs changing at f1
All currents are in milliamps and all frequencies are in megahertz.
12. Values for these conditions are examples of the ICC formula. These limits are specified but not tested.


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