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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
= 1.8 V ± 0.15 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
3 17.7 2.2 10.3 1.7 8.3 1.4 7.2
A B ns
t
PHL
2.8 14.3 2.2 8.5 1.8 7.1 1.7 7
t
PLH
3 17.7 2.3 16 2.1 15.5 1.9 15.1
B A ns
t
PHL
2.8 14.3 2.1 12.9 2 12.6 1.8 12.2
t
PHZ
10.6 30.9 10.3 30.5 10.5 30.5 10.7 29.3
DIR A ns
t
PLZ
7.3 19.7 7.5 19.6 7.5 19.5 7 19.4
t
PHZ
10 27.9 8.4 14.9 6.5 11.3 4.1 8.6
DIR B ns
t
PLZ
6.5 19.5 7.2 12.6 4.3 9.7 2.1 7.1
t
PZH
(1)
37.2 28.6 25.2 22.2
DIR A ns
t
PZL
(1)
42.2 27.8 23.9 20.8
t
PZH
(1)
37.4 29.9 27.8 26.6
DIR B ns
t
PZL
(1)
45.2 39 37.6 36.3
(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
= 2.5 V ± 0.2 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
2.3 16 1.5 8.5 1.3 6.4 1.1 5.1
A B ns
t
PHL
2.1 12.9 1.4 7.5 1.3 5.4 0.9 4.6
t
PLH
2.2 10.3 1.5 8.5 1.4 8 1 7.5
B A ns
t
PHL
2.2 8.5 1.4 7.5 1.3 7 0.9 6.2
t
PHZ
6.6 17.1 7.1 16.8 6.8 16.8 5.2 16.5
DIR A ns
t
PLZ
5.3 12.6 5.2 12.5 4.9 12.3 4.8 12.3
t
PHZ
10.7 27.9 8.1 13.9 5.8 10.5 3.5 7.6
DIR B ns
t
PLZ
7.8 18.9 6.2 11.2 3.6 8.9 1.4 6.2
t
PZH
(1)
29.2 19.7 16.9 13.7
DIR A ns
t
PZL
(1)
36.4 21.4 17.5 13.8
t
PZH
(1)
28.6 21 18.7 17.4
DIR B ns
t
PZL
(1)
30 24.3 22.2 21.1
(1) The enable time is a calculated value, derived using the formula shown in the enable times section.
6
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