Datasheet

MM74HCT540, Inverting Octal 3-STATE Buffer MM74HCT541, Octal 3-STATE Buffer
©1984 Fairchild Semiconductor Corporation www.fairchildsemi.com
Rev. 1.3 5
AC Electrical Characteristics
MM74HCT540: V
CC
= 5.0V, t
r
= t
f
= 6ns, T
A
= 25°C, (unless otherwise specified).
AC Electrical Characteristics
MM74HCT540: V
CC
= 5.0V ±10%, t
r
= t
f
= 6ns (unless otherwise specified).
Note:
4. C
PD
determines the no load dynamic power consumption, P
D
= C
PD
V
CC
2 f + I
CC
V
CC
, and the no load dynamic
current consumption, I
S
= C
PD
V
CC
f + I
CC.
Symbol Parameter Conditions Typ.
Guaranteed
Limits Units
t
PHL
, t
PLH
Maximum Output Propagation Delay C
L
= 45pF 12 18 ns
t
PZL
, t
PZH
Maximum Output Enable Time C
L
= 45pF, R
L
= 1kΩ 14 28 ns
t
PLZ
, t
PHZ
Maximum Output Disable Time C
L
= 5pF, R
L
= 1kΩ 13 25 ns
Symbol Parameter Conditions
T
A
= 25°C
T
A
= –40
to 85°C
T
A
= –55
to 125°C
UnitsTyp. Guaranteed Limits
t
PHL
, t
PLH
Maximum Output
Propagation Delay
C
L
= 50pF 12 20 25 30 ns
C
L
= 150pF 22 30 38 45
t
PZH
, t
PZL
Maximum Output Enable
Time
R
L
= 1kΩ C
L
= 50pF 15 30 38 45 ns
C
L
= 150pF 20 40 50 60
t
PHZ
, t
PLZ
Maximum Output Disable
Time
R
L
= 1kΩ, C
L
= 50pF 15 30 38 45 ns
t
THL
, t
TLH
Maximum Output Rise
and Fall Time
C
L
= 50pF 6 12 15 18 ns
C
IN
Maximum Input
Capacitance
510 10 10 pF
C
OUT
Maximum Output
Capacitance
15 20 20 20 pF
C
PD
Power Dissipation
Capacitance
(4)
(per output) G = V
CC
12 pF
G
= GND 50