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SN74LVCH16646A Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza SN74LVCH16646A
Descripción Electrónicos  16-BIT BUS TRANSCEIVER AND REGISTER WITH 3-STATE OUTPUTS
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Fabricante Electrónico  TI [Texas Instruments]
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SN74LVCH16646A Datasheet(HTML) 1 Page - Texas Instruments

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SN74LVCH16646A
16-BIT BUS TRANSCEIVER AND REGISTER
WITH 3-STATE OUTPUTS
SCAS318H – NOVEMBER 1993 – REVISED JUNE 1998
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Member of the Texas Instruments
Widebus
™ Family
D EPIC ™ (Enhanced-Performance Implanted
CMOS) Submicron Process
D Typical VOLP (Output Ground Bounce)
< 0.8 V at VCC = 3.3 V, TA = 25°C
D Typical VOHV (Output VOH Undershoot)
> 2 V at VCC = 3.3 V, TA = 25°C
D Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V VCC)
D Power Off Disables Outputs, Permitting
Live Insertion
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 250 mA Per
JESD 17
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) and Thin Shrink
Small-Outline (DGG) Packages
description
This 16-bit bus transceiver and register is
designed for 1.65-V to 3.6-V VCC operation.
The SN74LVCH16646A can be used as two 8-bit
transceivers or one 16-bit transceiver. The device
consists of bus transceiver circuits, D-type
flip-flops, and control circuitry arranged for
multiplexed transmission of data directly from the
input bus or from the internal registers.
Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB
or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that can be performed
with the SN74LVCH16646A.
Output-enable (OE) and direction-control (DIR) inputs control the transceiver functions. In the transceiver
mode, data present at the high-impedance port can be stored in either register or in both. The select-control
(SAB and SBA) inputs can multiplex stored and real-time (transparent mode) data. The circuitry used for select
control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored
and real-time data. DIR determines which bus receives data when OE is low. In the isolation mode (OE high),
A data can be stored in one register and/or B data can be stored in the other register.
Copyright
© 1998, Texas Instruments Incorporated
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.
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.
EPIC and Widebus are trademarks of Texas Instruments Incorporated.
DGG OR DL PACKAGE
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1DIR
1CLKAB
1SAB
GND
1A1
1A2
VCC
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCC
2A7
2A8
GND
2SAB
2CLKAB
2DIR
1OE
1CLKBA
1SBA
GND
1B1
1B2
VCC
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
VCC
2B7
2B8
GND
2SBA
2CLKBA
2OE


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