74ACQ244 Datasheet, PDF (5/10 Pages) Fairchild Semiconductor – Quiet Series. Octal Buffer/Line Driver with 3-STATE Outputs

DC Electrical Characteristics for ACTQ (Continued)
Note 11: Max number of outputs defined as (n). Data Inputs are driven 0V to 3V. One output @ GND.
Note 12: Max number of Data Inputs (n) switching. (n−1) Inputs switching 0V to 3V (ACTQ). Input-under-test switching: 3V to threshold (V_ILD),
0V to threshold (V_IHD), f = 1 MHz.
AC Electrical Characteristics for ACQ
V_CC
T_A = +25°C
T_A = −40°C to +85°C
Symbol
Parameter
(V)
C_L = 50 pF
C_L = 50 pF
Units
(Note 13)
Min
Typ
Max
Min
Max
t_PHL
t_PLH
t_PZL t_PZH
Propagation Delay
Data to Output
Output Enable Time
3.3
2.0
7.0
9.0
2.0
9.5
ns
5.0
1.5
5.0
6.0
1.5
6.5
3.3
2.5
8.0
12.0
2.5
12.5
ns
5.0
1.5
6.5
8.0
1.5
8.5
t_PHZ t_PLZ
Output Disable Time
3.3
1.0
9.0
13.5
1.0
14.0
ns
5.0
1.0
7.5
9.0
1.0
9.5
t_OSHL t_OSLH Output to Output
3.3
Skew Data to Output (Note 14)
5.0
1.0
1.5
0.5
1.0
1.5
ns
1.0
Note 13: Voltage Range 5.0 is 5.0V ± 0.5V.
Voltage Range 3.3 is 3.3V ± 0.3V.
Note 14: 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.
AC Electrical Characteristics for ACTQ
V_CC
T_A = +25°C
T_A = −40°C to +85°C
Symbol
Parameter
(V)
C_L = 50 pF
C_L = 50 pF
Units
(Note 15)
Min
Typ
Max
Min
Max
t_PHL
Propagation Delay
t_PLH
Data to Output
t_PZL
Output Enable Time
t_PZH
t_PHZ
Output Disable Time
t_PLZ
t_OSHL
Output to Output
t_OSLH
Skew Data to Output (Note 16)
Note 15: Voltage Range 5.0 is 5.0V ± 0.5V.
5.0
1.5
5.5
6.5
1.5
7.0
ns
5.0
1.5
7.0
8.5
1.5
9.0
ns
5.0
1.0
8.0
9.5
1.0
10.0
ns
5.0
0.5
1.0
1.0
ns
Note 16: 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.
Capacitance
Symbol
C_IN
C_PD
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
Units
Conditions
4.5
pF
V_CC = OPEN
70
pF
V_CC = 5.0V
5
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