SN74BCT2414 Datasheet | Texas Instruments

4BCT2414 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 mon 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. 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. Copyright  1993, Texas Instruments Incorporated - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 - POST OFFICE BOX 1443 HOUSTON, TEXAS 77251- 1443 2- 1 SN74BCT2414 MEMORY DECODER WITH ONĆCHIP SUPPLY VOLTAGE MONITOR SCBS059B - MARCH 1989 - REVISED NOVEMBER 1993 logic symbol† VCC 20 VP X > 3.65 V 2 SD 9 G & EN 1A 3 1B 5 7 1G X/Y 4 2A 6 2B 8 2G X/Y † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. 1 VS 18 1Y0 17 1Y1 16 1Y2 15 1Y3 14 2Y0 13 2Y1 12 2Y2 11 2Y3 2- 2 - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 - POST OFFICE BOX 1443 HOUSTON, TEXAS 77251- 1443 logic diagram (positive logic) VCC 20...