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M74HC540B1R

P1-P3P4-P6P7-P9P10-P10
M74HC540
4/10
AC ELECTRICAL CHARACTERISTICS (C
L
= 50 pF, Input t
r
= t
f
= 6ns)
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/8 (per gate)
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
C
L
(pF)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
t
TLH
t
THL
Output Transition
Time
2.0
50
25 60 75 90
ns4.5 7121918
6.0 6101315
t
PLH
t
PHL
Propagation Delay
Time
2.0
50
40 85 105 130
ns4.5 10 17 21 26
6.0 9141822
2.0
150
56 115 145 175
ns4.5 14 23 29 35
6.0 12 20 25 30
t
PZL
t
PZH
High Impedance
Output Enable
Time
2.0
50
R
L
= 1 KΩ
47 110 140 165
ns4.5 13 22 28 33
6.0 11 19 24 28
2.0
150
R
L
= 1 KΩ
61 135 170 205
ns4.5 17 27 34 41
6.0 14 23 29 35
t
PLZ
t
PHZ
High Impedance
Output Disable
Time
2.0
50
R
L
= 1 KΩ
52 110 140 165
ns4.5 15 22 28 33
6.0 13 19 24 28
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
C
IN
Input Capacitance
5.0 5101010pF
C
PD
Power Dissipation
Capacitance (note
1)
5.0 31 pF
Obsolete Product(s) - Obsolete Product(s)
M74HC540
5/10
TEST CIRCUIT
C
L
= 50pF/150pF or equivalent (includes jig and probe capacitance)
R
1
= 1KΩ or equivalent
R
T
= Z
OUT
of pulse generator (typically 50Ω)
WAVEFORM 1: PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
TEST SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
V
CC
t
PZH
, t
PHZ
GND
Obsolete Product(s) - Obsolete Product(s)
M74HC540
6/10
WAVEFORM 2 : OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
Obsolete Product(s) - Obsolete Product(s)
P1-P3P4-P6P7-P9P10-P10

M74HC540B1R

Mfr. #:
Buy M74HC540B1R
Manufacturer:
STMicroelectronics
Description:
IC BUFFER INVERT 6V 20DIP
Lifecycle:
New from this manufacturer.
Delivery:
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