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MC74VHC540 Datasheet, PDF (4/8 Pages) Motorola, Inc – Octal Bus Buffer
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DC ELECTRICAL CHARACTERISTICS
Symbol
Iin
Parameter
Maximum Input
Leakage Current
Test Conditions
Vin = 5.5V or GND
IOZ
Maximum
Vin = VIL or VIH
Three--State Leakage Vout = VCC or GND
Current
ICC
Maximum Quiescent Vin = VCC or GND
Supply Current
VCC
V
0 to 5.5
5.5
5.5
TA = 25°C
Min
Typ
Max
± 0.1
± 0.25
4.0
TA = -- 40 to 85°C
Min
Max Unit
± 1.0
μA
± 2.5
μA
40.0
μA
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3.0ns)
Symbol
tPLH,
tPHL
tPZL,
tPZH
tPLZ,
tPHZ
tOSLH,
tOSHL
Cin
Cout
Parameter
Maximum Propagation Delay,
A to Y
(Figures 1 and 3)
Output Enable TIme,
OEn to Y
(Figures 2 and 4)
Output Disable Time,
OEn to Y
(Figures 2 and 4)
Output to Output Skew
Maximum Input Capacitance
Maximum Three--State Output
Capacitance (Output in High
Impedance State)
Test Conditions
VCC = 3.3 ± 0.3V
VCC = 5.0 ± 0.5V
VCC = 3.3 ± 0.3V
RL = 1kΩ
VCC = 5.0 ± 0.5V
RL = 1kΩ
VCC = 3.3 ± 0.3V
RL = 1kΩ
VCC = 5.0 ± 0.5V
RL = 1kΩ
VCC = 3.3 ± 0.3V
(Note 1)
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 15pF
CL = 50pF
CL = 50pF
CL = 50pF
CL = 50pF
VCC = 5.0 ± 0.5V CL = 50pF
(Note 1)
TA = 25°C
Min
Typ
Max
4.8
7.0
7.3
10.5
3.7
5.0
5.2
7.0
6.8
10.5
9.3
14.0
4.7
7.2
6.2
9.2
11.2
15.4
6.0
8.8
1.5
1.0
4
10
6
TA = -- 40 to 85°C
Min
Max Unit
1.0
8.5
ns
1.0
12.0
1.0
6.0
1.0
8.0
1.0
12.5 ns
1.0
16.0
1.0
8.5
1.0
10.5
1.0
17.5 ns
1.0
10.0
ns
ns
10
pF
pF
Typical @ 25°C, VCC = 5.0V
CPD
Power Dissipation Capacitance (Note 2)
17
pF
1. Parameter guaranteed by design. tOSLH = |tPLHm -- tPLHn|, tOSHL = |tPHLm -- tPHLn|.
2. CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Average operating current can be obtained by the equation: ICC(OPR) = CPD ¯ VCC ¯ fin + ICC/8 (per bit). CPD is used to determine the no--load
dynamic power consumption; PD = CPD ¯ VCC2 ¯ fin + ICC ¯ VCC.
NOISE CHARACTERISTICS (Input tr = tf = 3.0ns, CL = 50pF, VCC = 5.0V)
Symbol
VOLP
VOLV
VIHD
VILD
Parameter
Quiet Output Maximum Dynamic VOL
Quiet Output Minimum Dynamic VOL
Minimum High Level Dynamic Input Voltage
Maximum Low Level Dynamic Input Voltage
TA = 25°C
Typ
Max
Unit
0.9
1.2
V
-- 0.9
-- 1.2
V
3.5
V
1.5
V
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