The SN74BCT2414 is a decoder specially designed to be used in memory systems with battery backup during power failure

SN74BCT2414

Manufacturer Part NumberSN74BCT2414
DescriptionThe SN74BCT2414 is a decoder specially designed to be used in memory systems with battery backup during power failure
ManufacturerTexas Instruments
SN74BCT2414 datasheet
 


Specifications of SN74BCT2414

Voltage Nodes(v)5Technology FamilyBCT
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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
V
)
bat
Built-In Supply-Voltage Monitor for V
Automatic Cut Off of Outputs During
V
Fail
CC
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 V
internal logic of the circuit is powered via the V
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
supply voltage monitor detects a power failure.
The SN74BCT2414 is characterized for operation from 0°C to 70°C.
SCBS059B − MARCH 1989 − REVISED NOVEMBER 1993
and
CC
CC
GND
terminal. In case V
drops below 3.65 V (nominal), the voltage
bat
CC
) from the system supply. This output is switched off when the on-chip
bat
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
DW OR N PACKAGE
(TOP VIEW)
VS
V
1
20
CC
SD
V
2
19
bat
1A
1Y0
3
18
2A
1Y1
4
17
1B
1Y2
5
16
2B
1Y3
6
15
1G
2Y0
7
14
2G
2Y1
8
13
G
2Y2
9
12
2Y3
10
11
terminal; the
CC
Copyright
1993, Texas Instruments Incorporated
2−1

SN74BCT2414 Summary of contents

  • Page 1

    ... 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. ...

  • Page 2

    SCBS059B − MARCH 1989 − REVISED NOVEMBER 1993 † logic symbol † This symbol is in accordance with ANSI/IEEE Std 91-1984 ...

  • Page 3

    V CC VCOMP 19 V bat SCBS059B − MARCH 1989 − REVISED NOVEMBER 1993 • POST OFFICE BOX 655303 ...

  • Page 4

    SCBS059B − MARCH 1989 − REVISED NOVEMBER 1993 CONTROL CONTROL NOTE: For a 3-line to 8-line decoder, the following pins must absolute maximum ratings ...

  • Page 5

    V CC Supply voltage V bat Supply voltage V IH High-level input voltage V IL Low-level input voltage I IK Input clamp current I OH High-level output current Low-level output current Low-level output ...

  • Page 6

    SCBS059B − MARCH 1989 − REVISED NOVEMBER 1993 switching characteristics (see Note 1) FROM PARAMETER (INPUT) t PLH PHL t PLH Any G Any G t PHL t PLH PHL ...

  • Page 7

    ... When the system supply voltage becomes lower than approximately 3.65 V, the voltage monitor inside the SN74BCT2414 memory decoder disconnects the input buffers of this circuit from the decoding logic internally and keeps all outputs at a logic one. The VS output is also switched off, disconnecting the system supply voltage from the memory circuits ...

  • Page 8

    ... SN74BCT2414DWG4 ACTIVE SN74BCT2414DWR ACTIVE SN74BCT2414DWRE4 ACTIVE SN74BCT2414DWRG4 ACTIVE SN74BCT2414N ACTIVE SN74BCT2414NE4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

  • Page 9

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing SN74BCT2414DWR SOIC DW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 20 2000 330.0 24.4 10.8 Pack Materials-Page 1 11-Mar-2008 B0 (mm) K0 (mm Pin1 (mm) (mm) Quadrant 13.0 2.7 12.0 24.0 Q1 ...

  • Page 10

    ... Device Package Type SN74BCT2414DWR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2000 Pack Materials-Page 2 11-Mar-2008 Width (mm) Height (mm) 346.0 346.0 41.0 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...