SN74AVCAH164245_02 Datasheet, PDF (9/11 Pages) Texas Instruments – 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74AVCAH164245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES396 – JULY 2002
output description
The DOC  circuitry is implemented, which, during the transition, initially lowers the output impedance to
effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical V_OL
vs I_OL and V_OH vs I_OH curves to illustrate the output impedance and drive capability of the circuit. At the
beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a
high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family
Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC ) Circuitry
Technology and Applications, literature number SCEA009.
3.2 _{TA = 25°C}
2.8 ^{Process = Nominal}
2.4
2.0
VCC = 3.3 V
TA = 25°C
2.8 Process = Nominal
2.4
2.0
1.6
VCC = 2.5 V
1.2
VCC = 1.8 V
0.8
0.4
0 17 34 51 68 85 102 119 136 153 170
IOL – Output Current – mA
1.6
1.2
0.8
VCC = 3.3 V
0.4
VCC = 2.5 V
VCC = 1.8 V
–160 –144 –128 –112 –96 –80 –64 –48 –32 –16 0
IOH – Output Current – mA
Figure 1. Output Voltage vs Output Current
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