PI74FCT2646T 查看數據表（PDF） - Pericom Semiconductor
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PI74FCT2646T Datasheet PDF : 7 Pages
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PI74FCT646/648/651/652T
(25Ω Series) P174FCT2646T/2652T
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PI74FCT646/2646T Switching Characteristics over Operating Range
Parameters Description
Conditions(1)
646T/2646T
Com.
Min
Max
646AT/2646AT
Com.
Min
Max
tPLH
Propagation Delay
tPHL
Bus to Bus
tPZH
Output Enable Time
tPZL
G, DIR to Bus
tPHZ
Output Disable Time(3)
tPLZ
G, DIR to Bus
tPLH
Propagation Delay
tPHL
Clock to Bus
tPLH
Propagation Delay
tPHL
SBA or SAB to Bus
tSU
Setup Time HIGH or
LOW, BUS to Clock
tH
Hold Time HIGH or
LOW, Bus to Clock
tW
Clock Pulse Width(3)
HIGH or LOW
CL = 50 pF
RL = 500Ω
2.0
7.5
2.0
6.3
2.0
14.0
2.0
9.8
2.0
9.0
2.0
6.3
2.0
9.0
2.0
6.3
2.0
9.5
2.0
7.7
4.0
—
2.0
—
2.0
—
1.5
—
6.0
—
5.0
—
646CT
Com.
Min
Max
1.5
5.4
1.5
7.8
1.5
6.3
1.5
5.7
1.5
6.2
2.0
—
1.5
—
5.0
—
646DT
Com.
Min
Max Unit
1.5
4.8 ns
1.5
7.3 ns
1.5
6.3 ns
1.5
5.2 ns
1.5
5.8 ns
2.0
— ns
1.5
— ns
5.0
— ns
PI74FCT648T Switching Characteristics over Operating Range
Parameters
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPLH
tPHL
tPLH
tPHL
tSU
tH
tW
Description
Propagation Delay
Bus to Bus
Output Enable Time
G, DIR to Bus
Output Disable Time(3)
G, DIR to Bus
Propagation Delay
Clock to Bus
Propagation Delay
SBA or SAB to Bus
Setup Time HIGH or
LOW, BUS to Clock
Hold Time HIGH or
LOW, Bus to Clock
Clock Pulse Width(3)
HIGH or LOW
Conditions(1)
CL = 50 pF
RL = 500Ω
648T
Com.
Min
Max
2.0
7.5
2.0
14.0
2.0
9.0
2.0
9.0
2.0
9.5
4.0
—
2.0
—
6.0
—
648AT
Com.
Min
Max
2.0
6.3
2.0
9.8
2.0
6.3
2.0
6.3
2.0
7.7
2.0
—
1.5
—
5.0
—
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter guaranteed but not production tested.
648CT
Com.
Min
Max
1.5
5.4
1.5
7.8
1.5
6.3
1.5
5.7
1.5
6.2
2.0
—
1.5
—
5.0
—
648DT
Com.
Min
Max Unit
1.5
4.8 ns
1.5
7.3 ns
1.5
6.3 ns
1.5
5.2 ns
1.5
5.8 ns
2.0
— ns
1.5
— ns
5.0
— ns
6
PS2022A 03/11/96
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