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SN74SSTUB32864 Folha de dados(PDF) 2 Page - Texas Instruments |
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SN74SSTUB32864 Folha de dados(HTML) 2 Page - Texas Instruments |
2 / 18 page www.ti.com DESCRIPTION (CONTINUED) SN74SSTUB32864 SCAS791A – OCTOBER 2006 – REVISED SEPTEMBER 2007 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. The device also supports low-power active operation by monitoring both system chip select (DCS and CSR) inputs and gates the Qn outputs from changing states when both DCS and CSR inputs are high. If either DCS or CSR input is low, the Qn outputs function normally. The RESET input has priority over the DCS and CSR control and, when driven low, forces the Qn outputs low. If the DCS control functionality is not desired, the CSR input can be hard-wired to ground, in which case the setup-time requirement for DCS is the same as for the other D data inputs. To control the low-power mode with DCS only, the CSR input should be pulled up to VCC through a pullup resistor. The two VREF pins (A3 and T3) are connected together internally by approximately 150Ω. However, it is necessary to connect only one of the two VREF pins to the external VREF power supply. An unused VREF pin should be terminated with a VREF coupling capacitor. 2 Submit Documentation Feedback Copyright © 2006–2007, Texas Instruments Incorporated Product Folder Link(s): SN74SSTUB32864 |
Nº de peça semelhante - SN74SSTUB32864 |
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Descrição semelhante - SN74SSTUB32864 |
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