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SN74ABTH162260DL Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte SN74ABTH162260DL
Spiegazioni elettronici  12-BIT TO 24-BIT MULTIPLEXED D-TYPE LATCHES WITH SERIES-DAMPING RESISTORS AND 3-STATE OUTPUTS
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

SN74ABTH162260DL Scheda tecnica(HTML) 1 Page - Texas Instruments

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SN54ABTH162260, SN74ABTH162260
12-BIT TO 24-BIT MULTIPLEXED D-TYPE LATCHES
WITH SERIES-DAMPING RESISTORS AND 3-STATE OUTPUTS
SCBS240D – JUNE 1992 – REVISED MAY 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Members of the Texas Instruments
Widebus
™ Family
D B-Port Outputs Have Equivalent 25-Ω
Series Resistors, So No External Resistors
Are Required
D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design
Significantly Reduces Power Dissipation
D ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D Latch-Up Performance Exceeds 500 mA Per
JEDEC Standard JESD-17
D Typical VOLP (Output Ground Bounce)
< 1 V at VCC = 5 V, TA = 25°C
D High-Impedance State During Power Up
and Power Down
D Distributed VCC and GND Pin Configuration
Minimizes High-Speed Switching Noise
D Flow-Through Architecture Optimizes PCB
Layout
D Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D Package Options Include Plastic 300-mil
Shrink Small-Outline (DL) Package and
380-mil Fine-Pitch Ceramic Flat (WD)
Package Using 25-mil Center-to-Center
Spacings
description
The ’ABTH162260 are 12-bit to 24-bit multiplexed D-type latches used in applications where two separate data
paths must be multiplexed onto, or demultiplexed from, a single data path. Typical applications include
multiplexing and/or demultiplexing of address and data information in microprocessor or bus-interface
applications. These devices are also useful in memory-interleaving applications.
Three 12-bit I/O ports (A1–A12, 1B1–1B12, and 2B1–2B12) are available for address and/or data transfer. The
output-enable (OE1B, OE2B, and OEA) inputs control the bus-transceiver functions. The OE1B and OE2B
control signals also allow bank control in the A-to-B direction.
Address and/or data information can be stored using the internal storage latches. The latch-enable (LE1B,
LE2B, LEA1B, and LEA2B) inputs are used to control data storage. When the latch-enable input is high, the
latch is transparent. When the latch-enable input goes low, the data present at the inputs is latched and remains
latched until the latch-enable input is returned high.
The B-port outputs, which are designed to sink up to 12 mA, include equivalent 25-
Ω series resistors to reduce
overshoot and undershoot.
SN54ABTH162260 ...WD PACKAGE
SN74ABTH162260 . . . DL PACKAGE
(TOP VIEW)
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OEA
LE1B
2B3
GND
2B2
2B1
VCC
A1
A2
A3
GND
A4
A5
A6
A7
A8
A9
GND
A10
A11
A12
VCC
1B1
1B2
GND
1B3
LE2B
SEL
OE2B
LEA2B
2B4
GND
2B5
2B6
VCC
2B7
2B8
2B9
GND
2B10
2B11
2B12
1B12
1B11
1B10
GND
1B9
1B8
1B7
VCC
1B6
1B5
GND
1B4
LEA1B
OE1B
Copyright
© 1997, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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.
Widebus and EPIC-
ΙΙB are trademarks of Texas Instruments Incorporated.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.


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