поискавой системы для электроныых деталей |
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SN74GTL2003PWR датащи(PDF) 10 Page - Texas Instruments |
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SN74GTL2003PWR датащи(HTML) 10 Page - Texas Instruments |
10 / 25 page S REF D REF G REF SW SW GTL2003 D1 S1 D2 S2 R R R R R PU PU PU PU PU V = 3.3V DPU V = 1.8V REF R 200K PU CPU I/O Chipset I/O Chipset I/O S7 D7 D8 S8 GND V = 5 V DPU SN74GTL2003 SCDS305B – FEBRUARY 2011 – REVISED JUNE 2015 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information SN74GTL2003 is a GTL/GTL+ to LVTTL/TTL bidirectional voltage level translator. This device can be used in both unidirectional applications and bidirectional. Please find the reference schematics and recommended values for passive components in the Typical Applications. 9.2 Typical Applications 9.2.1 Bidirectional Translation For the bidirectional clamping configuration (higher voltage to lower voltage or lower voltage to higher voltage), the GREF input must be connected to DREF and both pins pulled to HIGH-side VCC through a pullup resistor (typically 200 k Ω). TI recommends a filter capacitor on DREF. The processor output can be totem pole or open drain (pullup resistors) and the chipset output can be totem pole or open drain (pullup resistors are required to pull the Dn outputs to VCC). However, if either output is totem pole, data must be unidirectional or the outputs must be 3-statable, and the outputs must be controlled by some direction-control mechanism to prevent HIGH-to- LOW contentions in either direction. If both outputs are open drain, no direction control is needed. The opposite side of the reference transistor (SREF) is connected to the processor core power-supply voltage. When DREF is connected through a 200-k Ω resistor to a 3.3-V to 5.5-V VCC supply and SREF is set from 1 V to VCC 1.5 V, the output of each Sn has a maximum output voltage equal to SREF, and the output of each Dn has a maximum output voltage equal to VCC. Figure 6. Bidirectional Translation to Multiple Higher Voltage Levels (Such as an I2C or SMBus Applications) 10 Submit Documentation Feedback Copyright © 2011–2015, Texas Instruments Incorporated Product Folder Links: SN74GTL2003 |
Аналогичный номер детали - SN74GTL2003PWR |
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Аналогичное описание - SN74GTL2003PWR |
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