![](http://datasheet.mmic.net.cn/260000/PI74FCT162511_datasheet_15942081/PI74FCT162511_8.png)
8
PS2080A 01/15/95
PI74FCT16511/162511T
16-BIT REGISTERED/
LATCHED TRANSCEIVER WITH PARITY
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PI74FCT16511T/162511T Switching Characteristics over Operating Range (Setup Times)
16511/162511T
Com.
Min.
162511AT
Com.
Min.
Parameters
Description
Conditions
(1,3)
Max.
Max.
Unit
t
SU
Setup Time
HIGH or LOW
Ax to CLKAB
GEN/CHK LOW
PBx valid
PBx not valid
PERB valid
PERB not valid
PERB valid
PERB not valid
PERA valid
PERA not valid
6.5
3
6.5
3
6.5
3
6.5
3
—
—
—
—
—
—
—
—
4
3
4
3
4
3
4
3
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
GEN/CHK HIGH
t
SU
Setup Time
PAx to CLKAB
Setup Time
Bx to CLKBA
PBx to CLKBA
Setup Time
Ax to LEAB
GEN/CHK HIGH
t
SU
t
SU
CLKAB LOW
GEN/CHK LOW
CLKAB LOW
GEN/CHK HIGH
CLKAB HIGH
GEN/CHK LOW
CLKAB HIGH
GEN/CHK HIGH
CLKAB LOW
GEN/CHK HIGH
CLKAB HIGH
GEN/CHK HIGH
CLKBA LOW
PBx valid
PBx not valid
PERB valid
PERB not valid
PBx valid
PBx not valid
PERB valid
PERB not valid
PERB valid
PERB not valid
PERB valid
PERB not valid
PERA valid
PERA not valid
PERA valid
PERA not valid
6.5
3
6.5
3
6.5
3
6.5
3
6.5
3
6.5
3
6.5
3
6.5
3
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.5
3
3.5
3
3.5
3
3.5
3
3.5
3
3.5
3
3.5
3
3.5
3
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
SU
Setup Time
PAx to LEAB
t
SU
Setup Time
Bx to LEBA
PBx to LEBA
CLKAB HIGH
PI74FCT16511T/162511T Switching Characteristics over Operating Range (Hold Times)
16511/162511T16511/162511AT
Com.
Com.
Parameters
Description
Conditions
(1)
Min.
Max.
Min.
Max.
Unit
t
H
t
H
t
H
t
H
t
H
t
W
t
W
Hold Time HIGH or LOW Ax to LEAB, Bx to LEBA
Hold Time HIGH or LOW PAx to LEAB
Hold Time HIGH or LOW PBx to LEBA
Hold Time Ax to CLKAB, PAx to CLKAB
Hold Time Bx to CLKBA, PBx to CLKBA
LEAB or LEBA Pulse Width HIGH
(2)
CLKAB or CLKBA Pulse Width HIGH or LOW
(2)
1
1
1
1
1
3
3
—
—
—
—
—
—
—
1
1
1
1
1
3
3
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
Notes:
1. See test circuit and wave forms.
2. This parameter is guaranteed but not production tested.
3. “Not valid” means the setup time indicated is not sufficient to assure proper functioning of this output; however,
the set-up time indicated will assure proper functioning of the A-to-B or B-to-A port respective to the indicated
direction.
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
C
L
= 50 pF
R
L
= 500
C
L
= 50 pF
R
L
= 500