Datenblatt-Suchmaschine für elektronische Bauteile |
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74LVXC164245MEA Datenblatt(PDF) 1 Page - National Semiconductor (TI) |
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74LVXC164245MEA Datenblatt(HTML) 1 Page - National Semiconductor (TI) |
1 / 4 page TLF12535 ADVANCE INFORMATION March 1996 74LVXC164245 16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE Outputs General Description The LVXC164245 is a 48-pin dual-supply 16-bit configura- ble voltage interface transceiver suited for PCMCIA and oth- er real time configurable IO applications The VCCB pin ac- cepts a 5V supply level The ‘‘B’’ port is a dedicated 5V port The VCCA pin accepts a 3V-to-5V supply level The ‘‘A’’ port is configured to track the VCCA supply level respectively A 5V level on the VCC pin will configure the IO pins at a 5V level and a 3V VCC will configure the IO pins at a 3V level This device will allow the VCCA voltage source pin and IO pins on the ‘‘A’’ 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 dur- ing normal operation Features Y Power updown high impedance provides glitch-free bus loading Y Allows A port and VCCA to float simultaneously when OE is HIGH Y Bidirectional interface between 5V and 3V-to-5V buses Y Inputs compatible with TTL level Y Allow dual VCC supplies power updown easily when OE is HIGH Y Guaranteed simultaneous switching noise level and dy- namic threshold performance Y Available in SSOP and TSSOP packages Y Implements patented Quiet SeriesTM EMI reduction circuitry Y Flexible VCCA operating range Y Functionally compatible with the 74 series 16245 Logic Symbol TLF12535 – 1 Pin Names Description OEn Output Enable Input (Active Low) TRn TransmitReceive Input A0–A15 Side A InputsTRI-STATE Outputs B0–B15 Side B InputsTRI-STATE Outputs SSOP TSSOP JEDEC Order Number 74LVXC164245MEA 74LVXC164245MTD 74LVXC164245MEAX 74LVXC164245MTDX See NS Package MS48A MTD48 Number Connection Diagram Pin Assignment for SSOP and TSSOP TLF12535 – 2 C1996 National Semiconductor Corporation RRD-B30M17Printed in U S A http www nationalcom |
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