74abt646cscx-nl Fairchild Semiconductor, 74abt646cscx-nl Datasheet - Page 6

• Manufacturer Part Number: 74abt646cscx-nl
• Description: 74abt646 Octal Transceivers And Registers With 3-state Outputs
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
t
t
t
t
t
t
t
t
t
t
C
C
t
t
t
t
t
Extended AC Electrical Characteristics
PLH
PHL
PLH
PHL
PLH
PHL
PZH
PZL
PHZ
PLZ
Note 9: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.).
Note 10: This specification is guaranteed but not tested. The limits represent propagation delay with 250 pF load capacitors in place of the 50 pF load capac-
itors in the standard AC load. This specification pertains to single output switching only.
Note 11: This specification is guaranteed but not tested. The limits represent propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.) with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load.
Note 12: The 3-STATE delays are dominated by the RC network (500 , 250 pF) on the output and has been excluded from the datasheet.
Skew
(SOIC Package)
Note 13: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase
(i.e., all LOW-to-HIGH, HIGH-to-LOW, etc.).
Note 14: This specification is guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load
capacitors in the standard AC load.
Note 15: Skew is defined as the absolute value of the difference between the actual propagation delays for any two separate outputs of the same device.
The specification applies to any outputs switching HIGH-to-LOW (t
to-LOW (t
Note 16: This describes the difference between the delay of the LOW-to-HIGH and the HIGH-to-LOW transition on the same pin. It is measured across all
the outputs (drivers) on the same chip, the worst (largest delta) number is the guaranteed specification. This specification is guaranteed but not tested.
Note 17: Propagation delay variation for a given set of conditions (i.e., temperature and V
tested.
Capacitance
Note 18: C
OSHL
OSLH
PS
OST
PV
(SOIC Package)
IN
I/O
Symbol
(Note 16)
(Note 17)
Symbol
(Note 18)
(Note 15)
Symbol
(Note 15)
(Note 15)
OST
I/O
). This specification is guaranteed but not tested.
is measured at frequency, f
Propagation Delay
Clock to Bus
Propagation Delay
Bus to Bus
Propagation Delay
SBA or SAB to A
Output Enable Time
OE
Output Disable Time
OE
n
n
Pin to Pin Skew, HL Transitions
Pin to Pin Skew, LH Transitions
Duty Cycle, LH–HL Skew
Pin to Pin Skew, LH/HL Transitions
Device to Device Skew, LH/HL Transitions
or DIR to A
or DIR to A
Input Capacitance
Output Capacitance
Parameter
n
n
n
or B
or B
or B
Parameter
n
n
Parameter
n
1 MHz, per MIL-STD-883, Method 3012.
8 Outputs Switching
T
A
V
Min
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
CC
OSHL
C
(Note 9)
40 C to 85 C
L
8 Outputs Switching
), LOW
4.5V–5.5V
T
50 pF
A
V
CC
C
(Note 13)
6
Max
Typ
-
40 C to 85 C
5.5
5.5
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
L
11
to
5
Max
4.5V–5.5V
1.3
1.0
2.0
2.0
2.5
-
HIGH (t
50 pF
CC
OSLH
T
1 Output Switching
A
) from device to device. This specification is guaranteed but not
V
Min
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
CC
C
), or any combination switching LOW-to-HIGH and/or HIGH-
(Note 10)
(Note 12)
L
40 C to 85 C
Units
4.5V–5.5V
pF
pF
250 pF
8 Outputs Switching
T
A
V
Max
7.5
7.0
7.5
8.0
7.5
7.0
7.5
8.0
CC
C
(Note 14)
L
40 C to 85 C
V
V
Max
4.5V–5.5V
2.5
2.0
4.0
4.0
4.5
250 pF
CC
CC
8 Outputs Switching
T
A
0V (non I/O pins)
5.0V (A
V
Min
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
CC
C
(Note 11)
(Note 12)
L
40 C to 85 C
4.5V–5.5V
n
250 pF
Conditions
, B
T
A
n
)
Max
10.0
10.0
10.0
10.0
10.5
10.5
9.5
9.5
25 C
Units
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns