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SN74CB3T3245DWE4 数据表(PDF) 2 Page - Texas Instruments |
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SN74CB3T3245DWE4 数据表(HTML) 2 Page - Texas Instruments |
2 / 17 page www.ti.com DESCRIPTION/ORDERING INFORMATION (CONTINUED) VCC 9VCC 5.5 V 0 V NOTE A: If the input high-voltage (VIH) level is greater than or equal to (VCC − 1 V) and less than or equal to 5.5 V, then the output high-voltage (VOH) level will be equal to approximately the VCC voltage level. Input Voltages Output Voltages 0 V 9VCC − 1 V 9VCC − 1 V VCC IN OUT CB3T SN74CB3T3245 8-BIT FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE WITH 5-V-TOLERANT LEVEL SHIFTER SCDS136 – OCTOBER 2003 – REVISED MARCH 2005 Figure 1. Typical DC Voltage Translation Characteristics The SN74CB3T3245 is an 8-bit bus switch with a single ouput-enable (OE) input and a standard '245 pinout. When OE is low, the 8-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the 8-bit bus switch is OFF, and a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING Tube SN74CB3T3245DW SOIC – DW CB3T3245 Tape and reel SN74CB3T3245DWR SSOP (QSOP) – DBQ Tape and reel SN74CB3T3245DBQR CB3T3245 –40 °C to 85°C Tube SN74CB3T3245PW TSSOP – PW KS245 Tape and reel SN74CB3T3245PWR TVSOP – DGV Tape and reel SN74CB3T3245DGVR KS245 (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE INPUT INPUT/OUTPUT FUNCTION OE A L B A port = B port H Z Disconnect 2 |
类似零件编号 - SN74CB3T3245DWE4 |
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类似说明 - SN74CB3T3245DWE4 |
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