SN74LVC245DBR Datasheet, PDF (7/22 Pages) Texas Instruments – 8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

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SN74LVCH8T245
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES637A – AUGUST 2005 – REVISED FEBRUARY 2007
Switching Characteristics
over recommended operating free-air temperature range, V_CCA = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V_CCB = 1.8 V
± 0.15 V
MIN MAX
V_CCB = 2.5 V
± 0.2 V
MIN MAX
V_CCB = 3.3 V
± 0.3 V
MIN MAX
V_CCB = 5 V
± 0.5 V
MIN MAX
UNIT
t_PLH
A
B
1.5 21.2 1.1 8.8 0.8 6.2 0.5 4.4
ns
t_PHL
t_PLH
B
A
0.8 7.2 0.8 6.2 0.7 6.1 0.6
6
ns
t_PHL
t_PHZ
OE
A
1.6 8.2 1.6 8.2 1.6 8.2 1.6 8.2
ns
t_PLZ
t_PHZ
OE
B
2.1
29 1.7 10.3 1.5 8.6 0.8 6.3
ns
t_PLZ
t_PZH
OE
A
0.8 8.1 0.8 8.1 0.8 8.1 0.8 8.1
ns
t_PZL
t_PZH
OE
B
1.8 27.7 1.4 12.4 1.1 8.5 0.9 6.4
ns
t_PZL
Switching Characteristics
over recommended operating free-air temperature range, V_CCA = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V_CC = 1.8 V
± 0.15 V
MIN MAX
V_CC = 2.5 V
± 0.2 V
MIN MAX
V_CC = 3.3 V
± 0.3 V
MIN MAX
V_CC = 5 V
± 0.5 V
MIN MAX
UNIT
t_PLH
A
B
1.5 21.4
1 8.8 0.7
6
0.4 4.2
ns
t_PHL
t_PLH
B
A
0.7
7 0.4 4.8 0.3 4.5
0.3 4.3
ns
t_PHL
t_PHZ
OE
A
0.3 5.4 0.3 5.4 0.3 5.4
0.3 5.4
ns
t_PLZ
t_PHZ
OE
B
2 28.7 1.6 9.7 1.4
8
0.7 5.7
ns
t_PLZ
t_PZH
OE
A
0.7 6.4 0.7 6.4 0.7 6.4
0.7 6.4
ns
t_PZL
t_PZH
OE
B
1.5 27.6 1.3 11.4
1 8.1
0.9
6
ns
t_PZL
Operating Characteristics
T_A = 25°C
PARAMETER
C_pdA ⁽¹⁾
C_pdB ⁽¹⁾
A-port input, B-port output
B-port input, A-port output
A-port input, B-port output
B-port input, A-port output
TEST
CONDITIONS
C_L = 0,
f = 10 MHz,
t_r = t_f = 1 ns
(1) Power dissipation capacitance per transceiver
V_CCA =
V_CCB = 1.8 V
TYP
2
12
13
2
V_CCA =
V_CCB = 2.5 V
TYP
2
13
13
2
V_CCA =
V_CCB = 3.3 V
TYP
2
13
14
2
V_CCA =
V_CCB = 5 V
TYP
3
16
16
3
UNIT
pF
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