74FR900 View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
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74FR900 Datasheet PDF : 6 Pages
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Extended AC Electrical Characteristics (Continued)
TA = 0°C to +70°C
TA = 0°C to +70°C
VCC = +5.0V
VCC = +5.0V
Symbol
Parameter
CL = 50 pF
Nine Outputs Switching
CL = 250 pF
(Note 6)
Units
(Note 5)
Min
Max
Min
Max
tPHL
An or Bn to Cn
2.0
9.0
2.5
10.5
ns
Cn to An or Bn
tPLH
Propagation Delay
tPHL
C8 to A8 or B8 (PINV HIGH)
3.5
11.0
ns
tPLH
Propagation Delay
tPHL
An to Bn, Bn to An
4.5
12.0
5.5
13.5
ns
tPLH
Propagation Delay
tPHL
LEAC to Cn, LEBC to Cn
4.5
12.0
5.5
13.5
ns
tPLH
Propagation Delay
tPHL
LECA to An, LECB to Bn
3.0
11.5
4.0
13.5
ns
tPLH
Propagation Delay
tPHL
S0 to Cn
3.0
11.0
3.0
14.0
ns
tPLH
Propagation Delay
tPHL
S1 to An or Bn
3.5
12.0
4.5
15.0
ns
tPLH
Propagation Delay
tPHL
PINV to A8 or B8
2.5
12.0
ns
tPZH
Output Enable Time
tPZL
An, Cn
2.0
8.0
ns
tPHZ
Output Disable Time
tPLZ
An, Cn
1.5
6.0
ns
tPZH
Output Enable Time
tPZL
Bn
2.0
8.0
ns
tPHZ
Output Disable Time
tPLZ
Bn
2.0
7.0
ns
Note 5: 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, 3-STATE-to-HIGH, etc.
Note 6: This specification is guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load capac-
itors standard AC load. This specification pertains to single output switching only.
5
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