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CD74HC540 Datasheet, PDF (5/8 Pages) Texas Instruments – High Speed CMOS Logic Octal Buffer and Line Drivers, Three-State
◁
CD74HC540, CD74HCT540, CD74HC541, CD74HCT541
Switching Specifications CL = 50pF, Input tr, tf = 6ns
PARAMETER
HC TYPES
Propagation Delay
Data to Outputs (540)
TEST
SYMBOL CONDITIONS VCC (V) MIN
tPLH, tPHL CL = 50pF
2
-
4.5
-
Data to Outputs (541)
CL = 15pF
5
-
CL = 50pF
6
-
tPLZ, tPHZ CL = 50pF
2
-
4.5
-
CL = 15pF
5
-
CL = 50pF
6
-
Output Enable and Disable tPLZ, tPHZ CL = 50pF
2
-
to Outputs (540)
4.5
-
CL = 15pF
5
-
CL = 50pF
6
-
Output Enable and Disable tPLZ, tPHZ CL = 50pF
2
-
to Outputs (541)
4.5
-
Output Transition Time
CL = 15pF
5
-
CL = 50pF
6
-
tTHL, tTLH CL = 50pF
2
-
4.5
-
6
-
Input Capacitance
Three-State Output
Capacitance
CI
CL = 50pF
-
10
CO
-
-
20
Power Dissipation Capacitance CPD
CL = 15pF
5
-
(Notes 4, 5) (540)
Power Dissipation Capacitance CPD
CL = 15pF
5
-
(Notes 4, 5) (541)
HCT TYPES
Propagation Delay
Data to Outputs (540)
tPHL, tPLH
CL = 50pF
4.5
-
CL = 15pF
5
-
Data to Outputs (541)
tPHL, tPLH CL = 50pF
4.5
-
CL = 15pF
5
-
Output Enable and Disable tPLZ, tPHZ CL = 50pF
4.5
-
to Outputs (540, 541)
CL = 15pF
5
-
Output Transition Time
tTLH, tTHL CL = 50pF
4.5
-
Input Capacitance
CI
CL = 50pF
-
10
25oC
TYP MAX
- 110
-
22
9
-
-
19
- 115
-
23
9
-
-
20
- 160
-
32
13
-
-
27
- 160
-
32
14
-
-
23
-
60
-
12
-
10
-
10
-
20
50
-
48
-
-
24
9
-
-
28
11
-
-
35
14
-
-
12
-
10
-40oC TO
85oC
MIN MAX
-
140
-
28
-
-
-
24
-
145
-
29
-
-
-
25
-
200
-
40
-
-
-
34
-
200
-
40
-
-
-
29
-
75
-
15
-
13
-
10
-
20
-
-
-
-
-
30
-
-
-
35
-
-
-
44
-
-
-
15
-
10
-55oC TO
125oC
MIN MAX UNITS
-
165 ns
-
33
ns
-
-
ns
-
28
ns
-
175 ns
-
35
ns
-
-
ns
-
30
ns
-
240 ns
-
48
ns
-
-
ns
-
41
ns
-
240 ns
-
48
ns
-
-
ns
-
35
ns
-
90
ns
-
18
ns
-
15
ns
-
10
pF
-
20
pF
-
-
pF
-
-
pF
-
36
ns
-
-
ns
-
42
ns
-
-
ns
-
53
ns
-
-
ns
-
18
ns
-
10
pF
5
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