SN74AVCH16T245 Datasheet, PDF (9/19 Pages) Texas Instruments – 16 BIT DUAL SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS

SN74AVCH16T245
16ĆBIT DUALĆSUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3ĆSTATE OUTPUTS
SCES587A − AUGUST 2004 − REVISED OCTOBER 2004
operating characteristics, T_A = 25°C
PARAMETER
TEST
CONDITIONS
VCCA =
VCCB = 1.2 V
TYP
VCCA =
VCCB = 1.5 V
TYP
VCCA =
VCCB = 1.8 V
TYP
VCCA =
VCCB = 2.5 V
TYP
VCCA =
VCCB = 3.3 V
TYP
Outputs
enabled
1
1
1
1
2
A to B
Outputs
disabled
CL = 0,
1
1
1
1
1
CpdA†
f = 10 MHz,
Outputs
enabled
tr = tf = 1 ns
13
13
14
15
16
B to A
Outputs
disabled
1
1
1
1
1
Outputs
enabled
13
13
14
15
16
A to B
Outputs
CpdB†
disabled
CL = 0,
f = 10 MHz,
1
1
1
1
1
Outputs
enabled
tr = tf = 1 ns
1
1
1
1
2
B to A
Outputs
disabled
1
1
1
1
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.
typical total static power consumption (I_CCA + I_CCB)
VCCB
0V
0V
0
1.2 V
<0.5
1.5 V
<0.5
1.8 V
<0.5
2.5 V
<0.5
3.3 V
<0.5
1.2 V
<0.5
<1
<1
<1
1
1
Table 1
VCCA
1.5 V
1.8 V
<0.5
<0.5
<1
<1
<1
<1
<1
<1
<1
<1
<1
<1
2.5 V
<0.5
<1
<1
<1
<1
<1
3.3 V
<0.5
1
1
<1
<1
<1
UNIT
µA
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