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Switching Characteristics
Switching Characteristics
SN74AVCH2T45
DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES582F – JULY 2004 – REVISED NOVEMBER 2007
over recommended operating free-air temperature range, V
CCA
= 2.5 V ± 0.2 V (see Figure 11 )
V
CCB
= 1.5 V V
CCB
= 1.8 V V
CCB
= 2.5 V V
CCB
= 3.3 V
V
CCB
= 1.2 V
FROM TO
± 0.1 V ± 0.15 V ± 0.2 V ± 0.3 V
PARAMETER UNIT
(INPUT) (OUTPUT)
TYP MIN MAX MIN MAX MIN MAX MIN MAX
t
PLH
2.6 0.4 4.9 0.2 4 0.2 3 0.2 2.6
A B ns
t
PHL
2.6 0.4 4.9 0.2 4 0.2 3 0.2 2.6
t
PLH
2.1 0.6 3.8 0.5 3.4 0.4 3 0.3 2.8
B A ns
t
PHL
2.1 0.6 3.8 0.5 3.4 0.4 3 0.3 2.8
t
PHZ
2.4 0.7 7.9 0.8 6.4 0.8 5 0.5 4.3
DIR A ns
t
PLZ
2.4 0.7 7.9 0.8 6.4 0.8 5 0.5 4.3
t
PHZ
3.8 1 4.3 0.6 4.3 0.5 4.2 1.1 4.1
DIR B ns
t
PLZ
3.8 1 4.3 0.6 4.3 0.5 4.2 1.1 4.1
t
PZH
(1)
5.9 8.5 7.7 7.2 6.9
DIR A ns
t
PZL
(1)
5.9 8.5 7.7 7.2 6.9
t
PZH
(1)
5 12.8 10.4 8 6.9
DIR B ns
t
PZL
(1)
5 12.8 10.4 8 6.9
(1) The enable time is a calculated value derived using the formula shown in the enable times section.
over recommended operating free-air temperature range, V
CCA
= 3.3 V ± 0.3 V (see Figure 11 )
V
CCB
= 1.5 V V
CCB
= 1.8 V V
CCB
= 2.5 V V
CCB
= 3.3 V
V
CCB
= 1.2 V
FROM TO
± 0.1 V ± 0.15 V ± 0.2 V ± 0.3 V
PARAMETER UNIT
(INPUT) (OUTPUT)
TYP MIN MAX MIN MAX MIN MAX MIN MAX
t
PLH
2.5 0.3 4.7 0.2 3.8 0.2 2.8 0.2 2.4
A B ns
t
PHL
2.5 0.3 4.7 0.2 3.8 0.2 2.8 0.2 2.4
t
PLH
2.1 0.6 3.6 0.4 3.1 0.3 2.6 0.3 2.4
B A ns
t
PHL
2.1 0.6 3.6 0.4 3.1 0.3 2.6 0.3 2.4
t
PHZ
2.9 1.1 8 1 6.5 1.3 4.7 1.2 4
DIR A ns
t
PLZ
2.9 1.1 8 1 6.5 1.3 4.7 1.2 4
t
PHZ
3.4 0.5 6.6 0.3 5.6 0.3 4.6 1.1 4.2
DIR B ns
t
PLZ
3.4 0.5 6.6 0.3 5.6 0.3 4.6 1.1 4.2
t
PZH
(1)
5.5 10.2 8.7 7.2 6.6
DIR A ns
t
PZL
(1)
5.5 10.2 8.7 7.2 6.6
t
PZH
(1)
5.4 12.7 10.3 7.5 6.4
DIR B ns
t
PZL
(1)
5.4 12.7 10.3 7.5 6.4
(1) The enable time is a calculated value derived using the formula shown in the enable times section.
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