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Switching Characteristics
Switching Characteristics
SN74AVC2T45
DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES531J – DECEMBER 2003 – REVISED JUNE 2007
over recommended operating free-air temperature range, V
CCA
= 1.2 V (see Figure 1 )
V
CCB
= 1.2 V V
CCB
= 1.5 V V
CCB
= 1.8 V V
CCB
= 2.5 V V
CCB
= 3.3 V
FROM TO
PARAMETER UNIT
(INPUT) (OUTPUT)
TYP TYP TYP TYP TYP
t
PLH
3.1 2.6 2.4 2.2 2.2
A B ns
t
PHL
3.1 2.6 2.4 2.2 2.2
t
PLH
3.4 3.1 3 2.9 2.9
B A ns
t
PHL
3.4 3.1 3 2.9 2.9
t
PHZ
5.2 5.2 5.1 5 4.8
DIR A ns
t
PLZ
5.2 5.2 5.1 5 4.8
t
PHZ
5 4 3.8 2.8 3.2
DIR B ns
t
PLZ
5 4 3.8 2.8 3.2
t
PZH
(1)
8.4 7.1 6.8 5.7 6.1
DIR A ns
t
PZL
(1)
8.4 7.1 6.8 5.7 6.1
t
PZH
(1)
8.3 7.8 7.5 7.2 7
DIR B ns
t
PZL
(1)
8.3 7.8 7.5 7.2 7
(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
= 1.5 V ± 0.1 V (see Figure 1 )
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
2.8 0.7 5.4 0.5 4.6 0.4 3.7 0.3 3.5
A B ns
t
PHL
2.8 0.7 5.4 0.5 4.6 0.4 3.7 0.3 3.5
t
PLH
2.7 0.8 5.4 0.7 5.2 0.6 4.9 0.5 4.7
B A ns
t
PHL
2.7 0.8 5.4 0.7 5.2 0.6 4.9 0.5 4.7
t
PHZ
3.9 1.3 8.5 1.3 7.8 1.1 7.7 1.4 7.6
DIR A ns
t
PLZ
3.9 1.3 8.5 1.3 7.8 1.1 7.7 1.4 7.6
t
PHZ
4.7 1.1 7 1.4 6.9 1.2 6.9 1.7 7.1
DIR B ns
t
PLZ
4.7 1.1 7 1.4 6.9 1.2 6.9 1.7 7.1
t
PZH
(1)
7.4 12.4 12.1 11.8 11.8
DIR A ns
t
PZL
(1)
7.4 12.4 12.1 11.8 11.8
t
PZH
(1)
6.7 13.9 12.4 11.4 11.1
DIR B ns
t
PZL
(1)
6.7 13.9 12.4 11.4 11.1
(1) The enable time is a calculated value, derived using the formula shown in the enable times section.
6
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