MC74LVX244_14 Datasheet, PDF (3/6 Pages) ON Semiconductor – Octal Bus Buffer

MC74LVX244
AC ELECTRICAL CHARACTERISTICS (Input t_r = t_f = 3.0ns)
T_A = 25°C
T_A = −40 to 85°C
Symbol
Parameter
Test Conditions
Min Typ Max Min
Max
Unit
t_PLH,
t_PHL
Propagation Delay
Input to Output
V_CC = 2.7V
C_L = 15pF
C_L = 50pF
6.1 11.4 1.0
13.5
ns
8.6 14.9 1.0
17.0
V_CC = 3.3 ± 0.3V
C_L = 15pF
C_L = 50pF
4.7 7.1
1.0
8.5
7.2 10.6 1.0
12.0
t_PZL,
t_PZH
Output Enable Time to
High and Low Level
V_CC = 2.7V
R_L = 1kW
C_L = 15pF
C_L = 50pF
7.1 13.8 1.0
16.5
ns
9.6 17.3 1.0
20.0
V_CC = 3.3 ± 0.3V
R_L = 1kW
C_L = 15pF
C_L = 50pF
5.5 8.8
1.0
10.5
8.0 12.3 1.0
14.0
t_PLZ,
t_PHZ
Output Disable Time From
High and Low Level
V_CC = 2.7V
R_L = 1kW
C_L = 50pF
11.6 16.0 1.0
19.0
ns
V_CC = 3.3 ± 0.3V
R_L = 1kW
C_L = 50pF
9.7 11.4 1.0
13.0
t_OSHL Output−to−Output Skew
t_{OSLH (Note 1)}
V_CC = 2.7V
V_CC = 3.3 ± 0.3V
C_L = 50pF
C_L = 50pF
1.5
1.5
ns
1.5
1.5
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.
The specification applies to any outputs switching in the same direction, either HIGH−to−LOW (t_OSHL) or LOW−to−HIGH (t_OSLH); parameter
guaranteed by design.
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
T_A = 25°C
T_A = −40 to 85°C
Min Typ Max Min
Max
Unit
Cin Input Capacitance
4 10
10
pF
C_out Maximum Three−State Output Capacitance
6
pF
C_PD Power Dissipation Capacitance (Note 2)
19
pF
2. C_PD 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: I_CC(OPR) = C_PD  V_CC  f_in + I_CC / 8 (per bit). C_PD is used to determine the no−load
dynamic power consumption; P_D = C_PD  V_CC2  f_in + I_CC  V_CC.
NOISE CHARACTERISTICS (Input t_r = t_f = 3.0ns, C_L = 50pF, V_CC = 3.3V, Measured in SOIC Package)
T_A = 25°C
Symbol
Characteristic
Typ
Max
Unit
V_OLP Quiet Output Maximum Dynamic V_OL
0.5
0.8
V
V_OLV Quiet Output Minimum Dynamic V_OL
−0.5
−0.8
V
V_IHD Minimum High Level Dynamic Input Voltage
2.0
V
V_ILD Maximum Low Level Dynamic Input Voltage
0.8
V
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