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74LVXC3245MTC Folha de dados(PDF) 1 Page - Fairchild Semiconductor |
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74LVXC3245MTC Folha de dados(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page © 1994 Fairchild Semiconductor Corporation www.fairchildsemi.com February 2009 74LVXC3245 8-Bit Dual Supply Configurable Voltage Interface Transceiver with 3-STATE Outputs Features ■ Bidirectional interface between 3V and 3V-to-5V buses ■ Control inputs compatible with TTL level ■ Outputs source/sink up to 24 mA ■ Guaranteed simultaneous switching noise level and dynamic threshold performance ■ Flexible VCCB operating range ■ Allows B Port and VCCB to float simultaneously when OE is HIGH ■ Functionally compatible with the 74 series 245 General Description The LVXC3245 is a 24-pin dual-supply, 8-bit configurable voltage interface transceiver suited for PCMCIA and other real time configurable I/O applications. The VCCA pin accepts a 3V supply level. The A Port is a dedicated 3V port. The VCCB pin accepts a 3V-to-5V supply level. The B Port is configured to track the VCCB supply level respec- tively. A 5V level on the VCC pin will configure the I/O pins at a 5V level and a 3V VCC will configure the I/O pins at a 3V level. The A Port should interface with a 3V host system and the B Port to the card slots. This device will allow the VCCB voltage source pin and I/O pins on the B Port to float when OE is HIGH. This feature is necessary to buffer data to and from a PCMCIA socket that permits PCMCIA cards to be inserted and removed during normal operation. Ordering Code: Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbol/s Pin Descriptions Connection Diagram/s Order Number Package Number Package Description 74LVXC3245WM M24B 224-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74LVXC3245QSC MQA24 24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide 74LVXC3245MTC MTC24 24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Pin Names Description OE Output Enable Input T/R Transmit/Receive Input A0–A7 Side A Inputs or 3-STATE Outputs B0–B7 Side B Inputs or 3-STATE Outputs ■ Implements proprietary EMI reduction circuitry |
Nº de peça semelhante - 74LVXC3245MTC |
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Descrição semelhante - 74LVXC3245MTC |
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