SN74AVCB324245_06 Datasheet, PDF (9/14 Pages) Texas Instruments – 32-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

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SN74AVCB324245
32-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES485A – AUGUST 2003 – REVISED MARCH 2005
Output Description
The dynamic output control (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
V_CC = 3.3 V
T_A = 25°C
2.8 Process = Nominal
2.4
2.0
1.6
V_CC = 2.5 V
1.2
V_CC = 1.8 V
0.8
0.4
0 17
34 51 68 85 102 119 136 153 170
I_OL - Output Current - mA
1.6
1.2
0.8
V_CC = 3.3 V
0.4
V_CC = 2.5 V
V_CC = 1.8 V
-160 -144 -128 -112 -96 -80 -64 -48 -32 -16 0
I_OH - Output Current - mA
Figure 1. Typical Output Voltage vs Output Current
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