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SN74CBTLV3857DGV Folha de dados(PDF) 1 Page - Texas Instruments

Nome de Peças SN74CBTLV3857DGV
Descrição Electrónicos  LOW-VOLTAGE 10-BIT FET BUS SWITCH WITH INTERNAL PULLDOWN RESISTORS
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SN74CBTLV3857
LOW-VOLTAGE 10-BIT FET BUS SWITCH
WITH INTERNAL PULLDOWN RESISTORS
SCDS085B – OCTOBER 1998 – REVISED AUGUST 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Enable Signal Is SSTL_2 Compatible
D Flow-Through Architecture Optimizes PCB
Layout
D Designed for Use With 200 Mbit/s Double
Data-Rate (DDR) SDRAM Applications
D Switch On-State Resistance Is Designed to
Eliminate Series Resistor to DDR SDRAM
D Internal 10-kΩ Pulldown Resistors to
Ground on B Port
D Internal 50-kΩ Pullup Resistor on
Output-Enable Input
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D Package Options Include Shrink
Small-Outline (DBQ), Thin Very
Small-Outline (DGV), Small-Outline (DW),
and Thin Shrink Small-Outline (PW)
Packages
description
This 10-bit FET bus switch is designed for 3-V to 3.6-V VCC operation and SSTL_2 output-enable (OE) input
levels.
When OE is low, the 10-bit bus switch is on, and port A is connected to port B. When OE is high, the switch is
open, and the high-impedance state exists between the two ports. There are 10-k
Ω pulldown resistors to ground
on the B port.
The FET switch on-state resistance is designed to replace the series terminating resistor in the SSTL_2 data
path.
The SN74CBTLV3857 is characterized for operation from –40
°C to 85°C.
FUNCTION TABLE
INPUT
OE
FUNCTION
L
A port = B port
H
Disconnect
Copyright
© 1999, 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.
DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
VREF
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
GND
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
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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