SN74AVCH1T45DCKT Datasheet, PDF (9/34 Pages) Texas Instruments – SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION ND 3-STATE OUTPUTS

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SN74AVCH1T45
SINGLE-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES598D – JULY 2004 – REVISED JANUARY 2008
Operating Characteristics
T_A = 25°C
PARAMETER
TEST
CONDITIONS
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
C_L = 0 pF,
f = 10 MHz,
t_r = t_f = 1 ns
C_L = 0 pF,
f = 10 MHz,
t_r = t_f = 1 ns
V_CCA =
V_CCB = 1.2 V
TYP
V_CCA =
V_CCB = 1.5 V
TYP
V_CCA =
V_CCB = 1.8 V
TYP
V_CCA =
V_CCB = 2.5 V
TYP
V_CCA =
V_CCB = 3.3 V
TYP
3
3
3
3
4
14
14
14
15
16
14
14
14
15
16
3
3
3
3
4
(1) Power-dissipation capacitance per transceiver
UNIT
pF
pF
Power-Up Considerations
A proper power-up sequence always should be followed to avoid excessive supply current, bus contention,
oscillations, or other anomalies. To guard against such power-up problems, take the following precautions:
1. Connect ground before any supply voltage is applied.
2. Power up V_CCA.
3. V_CCB can be ramped up along with or after V_CCA.
V_CCB
0V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
Table 1. Typical Total Static Power Consumption (I_CCA + I_CCB)
V_CCA
0V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1
<1
<1
<1
1
<0.5
<1
<1
<1
<1
1
<0.5
<1
<1
<1
<1
<1
<0.5
1
<1
<1
<1
<1
<0.5
1
<1
<1
<1
<1
UNIT
µA
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