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Switching Characteristics
Switching Characteristics
SN74LVC2T45
DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES516I – DECEMBER 2003 – REVISED MARCH 2007
over recommended operating free-air temperature range, V
CCA
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1 )
V
CCB
= 1.8 V V
CCB
= 2.5 V V
CCB
= 3.3 V V
CCB
= 5 V
FROM TO
± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V
PARAMETER UNIT
(INPUT) (OUTPUT)
MIN MAX MIN MAX MIN MAX MIN MAX
t
PLH
2.1 15.5 1.4 8 0.7 5.6 0.7 4.4
A B ns
t
PHL
2 12.6 1.3 7 0.8 5 0.7 4
t
PLH
1.7 8.3 1.3 6.4 0.7 5.8 0.6 5.4
B A ns
t
PHL
1.8 7.1 1.3 5.4 0.8 5 0.7 4.5
t
PHZ
5 10.9 5.1 10.8 5 10.8 5 10.4
DIR A ns
t
PLZ
3.4 8.4 3.7 8.4 3.9 8.1 3.3 7.8
t
PHZ
11.2 27.3 8 13.7 5.8 10.4 2.9 7.4
DIR B ns
t
PLZ
9.4 17.7 5.6 11.3 4.3 8.3 1 5.6
t
PZH
(1)
26 17.7 14.1 11
DIR A ns
t
PZL
(1)
34.4 19.1 15.4 11.9
t
PZH
(1)
23.9 16.4 13.9 12.2
DIR B ns
t
PZL
(1)
23.5 17.8 15.8 14.4
(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
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1 )
V
CCB
= 1.8 V V
CCB
= 2.5 V V
CCB
= 3.3 V V
CCB
= 5 V
FROM TO
± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V
PARAMETER UNIT
(INPUT) (OUTPUT)
MIN MAX MIN MAX MIN MAX MIN MAX
t
PLH
1.9 15.1 1 7.5 0.6 5.4 0.5 3.9
A B ns
t
PHL
1.8 12.2 0.9 6.2 0.7 4.5 0.5 3.5
t
PLH
1.4 7.2 1 5.1 0.7 4.4 0.5 3.9
B A ns
t
PHL
1.7 7 0.9 4.6 0.7 4 0.5 3.5
t
PHZ
2.9 8.2 2.9 7.9 2.8 7.9 2.2 7.8
DIR A ns
t
PLZ
1.4 6.9 1.3 6.7 0.7 6.7 0.7 6.6
t
PHZ
11.2 26.1 7.2 13.9 5.8 10.1 1.3 7.3
DIR B ns
t
PLZ
8.4 16.9 5 11 4 7.7 1 5.6
t
PZH
(1)
24.1 16.1 12.1 9.5
DIR A ns
t
PZL
(1)
33.1 18.5 14.1 10.8
t
PZH
(1)
22 14.2 12.1 10.5
DIR B ns
t
PZL
(1)
20.4 14.1 12.4 11.3
(1) The enable time is a calculated value, derived using the formula shown in the enable times section.
7
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