SN74AVCH20T245_09 Datasheet, PDF (4/21 Pages) Texas Instruments – 20-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74AVCH20T245
20ĆBIT DUALĆSUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3ĆSTATE OUTPUTS
SCES567F − MAY 2004 − REVISED APRIL 2005
recommended operating conditions (see Notes 4 through 8)
VCCA
VCCB
VIH
Supply voltage
Supply voltage
High-level input
voltage
Data inputs
(see Note 7)
VCCI
VCCO
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
MIN
1.2
1.2
VCCI × 0.65
1.6
2
MAX
3.6
3.6
UNIT
V
V
V
Low-level input
VIL
voltage
Data inputs
(see Note 7)
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
VCCI × 0.35
0.7
V
0.8
High-level input
VIH
voltage
DIR
(referenced to VCCA)
(see Note 8)
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
VCCA ×0.65
1.6
V
2
Low-level input
VIL
voltage
DIR
(referenced to VCCA)
(see Note 8)
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
VCCA × 0.35
0.7
V
0.8
VI
Input voltage
VO
Output voltage
Active state
3-state
0
3.6
V
0
VCCO
V
0
3.6
1.2 V
−3
1.4 V to 1.6 V
−6
IOH
High-level output current
1.65 V to 1.95 V
2.3 V to 2.7 V
−8
mA
−9
3 V to 3.6 V
−12
1.2 V
3
1.4 V to 1.6 V
6
IOL
Low-level output current
1.65 V to 1.95 V
2.3 V to 2.7 V
8
mA
9
3 V to 3.6 V
12
∆t/∆v
Input transition rise or fall rate
5
ns/V
TA
NOTES:
Operating free-air temperature
−40
85
°C
4. VCCI is the VCC associated with the data input port.
5. VCCO is the VCC associated with the output port.
6. All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
7. For VCCI values not specified in the data sheet, VIH(min) = VCCI x 0.7 V, VIL(max) = VCCI x 0.3 V.
8. For VCCI values not specified in the data sheet, VIH(min) = VCCA x 0.7 V, VIL(max) = VCCA x 0.3 V.
4
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