SN74BCT2414 Datasheet, PDF (1/9 Pages) Texas Instruments – MEMORY DECODER WITH ON-CHIP SUPPLY VOLTAGE MONITOR

• 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
V_bat )
• Built-In Supply-Voltage Monitor for V_CC
• Automatic Cut Off of Outputs During
V_CC Fail
• Package Options Include Plastic
Small-Outline (DW) Packages and Standard
Plastic 300-mil DIPs (N)
SN74BCT2414
MEMORY DECODER
WITH ON-CHIP SUPPLY VOLTAGE MONITOR
SCBS059B – MARCH 1989 – REVISED NOVEMBER 1993
DW OR N PACKAGE
(TOP VIEW)
VS ₁
SD ₂
1A 3
2A 4
1B 5
2B 6
1G 7
2G 8
G9
GND 10
20 ^V_CC
19 ^V_bat
18 1Y0
17 1Y1
16 1Y2
15 1Y3
14 2Y0
13 2Y1
12 2Y2
11 2Y3
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 V_CC terminal; the
internal logic of the circuit is powered via the V_bat terminal. In case V_CC 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 (V_bat) 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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1993, Texas Instruments Incorporated
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