MC74AC646_15 Datasheet, PDF (6/10 Pages) ON Semiconductor – Octal Transceiver/Register with 3-State Outputs

MC74AC646, MC74ACT646
AC CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)
74AC
74AC
Symbol
Parameter
V_CC*
(V)
T_A = +25°C
C_L = 50 pF
T_A = −40°C
to +85°C
C_L = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
Propagation Delay
t_PLH
Clock to Bus
3.3 4.0 10.5 16.5 3.0 18.5
5.0 2.5 7.5 12 2.0 13
ns
3−6
Propagation Delay
t_PHL
Clock to Bus
3.3 3.0 9.5 14.5 2.5 16
5.0 2.0 6.5 10.5 1.5 11.5
ns
3−6
Propagation Delay
t_PLH
Bus to Bus
3.3 2.5 7.5 12 2.0 13.5
5.0 1.5 5.0 8.0 1.0 9.0
ns
3−5
Propagation Delay
t_PHL
Bus to Bus
3.3 1.5 7.5 12.5 1.5 13.5
5.0 1.5 5.0 9.0 1.0 9.5
ns
3−5
Propagation Delay
t_PLH
SBA or SAB to A_n or B_n
(w/A_n or B_n HIGH or LOW)
Propagation Delay
t_PHL
SBA or SAB to A_n or B_n
(w/A_n or B_n HIGH or LOW)
t_PZH
Enable Time
G to A_n or B_n
Enable Time
t_PZL
G to A_n or B_n
Disable Time
t_PHZ
G to A_n or B_n
Disable Time
t_PLZ
G to A_n or B_n
Enable Time
t_PZH
DIR to A_n or B_n
Enable Time
t_PZL
DIR to A_n or B_n
Disable Time
t_PHZ
DIR to A_n or B_n
Disable Time
t_PLZ
DIR to A_n or B_n
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
3.3 2.0 8.5 13.5 1.5 15.5
5.0 1.5 6.0 10 1.5 11
ns
3−6
3.3 1.5 8.5 13.5 1.5 15
5.0 1.5 6.0 10 1.5 11
ns
3−6
3.3 2.5 7.0 11.5 2.0 12.5
5.0 1.5 5.0 8.5 1.5 9.0
ns
3−7
3.3 2.5 7.5 12.5 2.0 14
5.0 1.5 5.5 9.0 1.5 10
ns
3−8
3.3 3.0 8.0 12.5 2.5 13.5
5.0 2.0 6.5 10 2.0 11
ns
3−7
3.3 2.0 7.5 12 2.0 13.5
5.0 1.5 6.0 9.5 1.5 10.5
ns
3−8
3.3 2.0 6.5 11 1.5 12
5.0 1.5 5.0 7.5 1.0 8.5
ns
3−7
3.3 2.5 7.0 11.5 2.0 13
5.0 1.5 5.0 8.0 1.0 9.0
ns
3−8
3.3 2.5 7.5 11.5 1.5 12.5
5.0 1.5 5.5 9.5 1.5 10
ns
3−7
3.3 1.5 7.5 12 1.5 13.5
5.0 1.5 5.5 9.5 1.5 10.5
ns
3−8
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