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74VCX162839 Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part No. 74VCX162839
Description  Low Voltage 20-Bit Selectable Register/Buffer with 3.6V Tolerant Inputs and Outputs and 26Ω Series Resistors in the Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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AC Electrical Characteristics (Note 8)
Note 8: For CL = 50 pF, add approximately 300 ps to the AC maximum specification.
Note 9: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).
Extended AC Electrical Characteristics (Note 10)
Note 10: This parameter is guaranteed by characterization but not tested.
Dynamic Switching Characteristics
Capacitance
Symbol
Parameter
TA = −40°C to +85°C, CL = 30 pF, RL = 500Ω
Units
VCC = 3.3V ± 0.3V
VCC = 2.5V ± 0.2V
VCC = 1.8V ± 0.15V
Min
Max
Min
Max
Min
Max
fMAX
Maximum Clock Frequency
250
200
125
MHz
tPHL
Prop Delay In to On
0.8
3.5
1.0
4.9
1.5
9.8
ns
tPLH
(REGE
= 0)
tPHL
Prop Delay CP to On
0.8
4.1
1.0
5.8
1.5
9.8
ns
tPLH
(REGE
= 1)
tPHL, tPLH
Prop Delay REGE to On
0.8
4.9
1.0
6.4
1.5
9.8
ns
tPZL, tPZH
Output Enable Time
0.8
4.3
1.0
6.1
1.5
9.8
ns
tPLZ, tPHZ
Output Disable Time
0.8
4.3
1.0
4.9
1.5
8.8
ns
tS
Setup Time
1.0
1.0
2.5
ns
tH
Hold Time
0.7
0.7
1.0
ns
tW
Pulse Width
1.5
1.5
4.0
ns
tosHL
Output to Output Skew
0.5
0.5
0.75
ns
tosLH
(Note 9)
Symbol
Parameter
TA = −0°C to +85°C, RL = 500Ω VCC = 3.3V ± 0.3V
Units
CL = 50 pF
Min
Max
tPHL, tPLH
Prop Delay In to On (REGE = 0)
1.0
3.8
ns
tPHL, tPLH
Prop Delay CP to On (REGE = 1)
1.4
4.4
ns
tPHL, tPLH
Prop Delay REGE to On
1.0
5.2
ns
tPZL, tPZH
Output Enable Time
1.0
4.6
ns
tPLZ, tPHZ
Output Disable Time
1.0
4.6
ns
tS
Setup Time
1.0
ns
tH
Hold Time
0.7
ns
Symbol
Parameter
Conditions
VCC
(V)
TA = +25°C
Units
Typical
VOLP
Quiet Output Dynamic Peak VOL
CL = 30 pF, VIH = VCC, VIL = 0V
1.8
0.15
V
2.5
0.25
3.3
0.35
VOLV
Quiet Output Dynamic Valley VOL
CL = 30 pF, VIH = VCC, VIL = 0V
1.8
−0.15
V
2.5
−0.25
3.3
−0.35
VOHV
Quiet Output Dynamic Valley VOH
CL = 30 pF, VIH = VCC, VIL = 0V
1.8
1.55
V
2.5
2.05
3.3
2.65
Symbol
Parameter
Conditions
TA = +25°C
Units
Typical
CIN
Input Capacitance
VCC = 1.8V, 2.5V or 3.3V, VI = 0V or VCC
6pF
COUT
Output Capacitance
VI = 0V or VCC, VCC = 1.8V, 2.5V or 3.3V
7
pF
CPD
Power Dissipation Capacitance
VI = 0V or VCC, f = 10 MHz,
20
pF
VCC = 1.8V, 2.5V or 3.3V




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