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SN74GTL2010 Arkusz danych(PDF) 10 Page - Texas Instruments |
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SN74GTL2010 Arkusz danych(HTML) 10 Page - Texas Instruments |
10 / 18 page www.ti.com Unidirectional Down Translation S REF D REF G REF SW SW GTL2010 D1 S1 D2 S2 Sn GND Dn V =5V DPU V =1.8V REF 200K CPUI/O Chipset I/O GTL2010 10-BIT BIDIRECTIONAL LOW-VOLTAGE TRANSLATOR SCDS221 – SEPTEMBER 2006 APPLICATION INFORMATION (continued) For unidirectional clamping (higher voltage to lower voltage), the GREF input must be connected to DREF and both pins pulled to the higher-side VCC through a pullup resistor (typically 200 kΩ). A filter capacitor on DREF is recommended. Pullup resistors are required if the chipset I/Os are open drain. 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 V CC supply and SREF is set between 1 V to VCC – 1.5 V, the output of each Sn has a maximum output voltage equal to SREF. Figure 6. Unidirectional Down Translation to Protect Low-Voltage Processor Pins 10 Submit Documentation Feedback |
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