Datasheet
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Switching Characteristics
Operating 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
= 3.3 V ± 0.3 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
2.5 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.
T
A
= 25 ° C
V
CCA
= V
CCA
= V
CCA
= V
CCA
= V
CCA
=
TEST
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
PARAMETER UNIT
CONDITIONS
TYP TYP TYP TYP TYP
A-port input,
3 3 3 3 4
C
L
= 0,
B-port output
C
pdA
(1)
f = 10 MHz, pF
B-port input,
t
r
= t
f
= 1 ns
12 13 13 14 15
A-port output
A-port input,
12 13 13 14 15
C
L
= 0,
B-port output
C
pdB
(1)
f = 10 MHz, pF
B-port input,
t
r
= t
f
= 1 ns
3 3 3 3 4
A-port output
(1) Power-dissipation capacitance per transceiver
8
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