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SN74BCT2414 Datasheet(PDF) 1 Page - Texas Instruments |
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SN74BCT2414 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 14 page SN74BCT2414 MEMORY DECODER WITH ONCHIP SUPPLY VOLTAGE MONITOR SCBS059B − MARCH 1989 − REVISED NOVEMBER 1993 Copyright 1993, Texas Instruments Incorporated 2−1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 • BiCMOS Design Substantially Reduces Standby Current • Two Independent 2-Line to 4-Line Decoders or One 3-Line to 8-Line Decoder • Separate Enable Inputs for Easy Cascading • Two Supply Voltage Terminals (V CC and Vbat ) • Built-In Supply-Voltage Monitor for V CC • Automatic Cut Off of Outputs During VCC Fail • Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic 300-mil DIPs (N) description The SN74BCT2414 is a decoder specially designed to be used in memory systems with battery backup during power failure. The two independent 2-line to 4-line decoders with separate and common control inputs may be externally cascaded to implement a 3-line to 8-line decoder. The circuit has two supply voltage inputs: the voltage monitor (bandgap) is powered via the VCC terminal; the internal logic of the circuit is powered via the Vbat terminal. In case VCC drops below 3.65 V (nominal), the voltage monitor forces the voltage-control (VS) and decoder outputs (Y) to the high level. VS may be used to disconnect the supply voltage of the memories (Vbat) from the system supply. This output is switched off when the on-chip supply voltage monitor detects a power failure. The SN74BCT2414 is characterized for operation from 0 °C to 70°C. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VS SD 1A 2A 1B 2B 1G 2G G GND VCC Vbat 1Y0 1Y1 1Y2 1Y3 2Y0 2Y1 2Y2 2Y3 DW OR N PACKAGE (TOP VIEW) PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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