參數(shù)資料
型號(hào)： SN74CBT6800CDWE4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 總線收發(fā)器
英文描述： CBT/FST/QS/5C/B SERIES, 10 1-BIT DRIVER, TRUE OUTPUT, PDSO24
封裝： PLASTIC, SOIC-24
文件頁(yè)數(shù)： 10/17頁(yè)
文件大小： 532K
代理商： SN74CBT6800CDWE4
SN74CBT6800C
10BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS
5V BUS SWITCH WITH -2V UNDERSHOOT PROTECTION
SCDS138 OCTOBER 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
The SN74CBT6800C is a 10-bit bus switch with a single output-enable (ON) input. When ON is low, the 10-bit
bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When
ON is high, the 10-bit bus switch is OFF, and a high-impedance state exists between the A and B ports. The
B port is precharged to BIASV through the equivalent of a 10-k
resistor when ON is high, or if the device is
powered down (VCC = 0 V).
During insertion (or removal) of a card into (or from) an active bus, the card’s output voltage may be close to
GND. When the connector pins make contact, the card’s parasitic capacitance tries to force the bus signal to
GND, creating a possible glitch on the active bus. This glitching effect can be reduced by using a bus switch
with precharged bias voltage (BIASV) of the bus switch equal to the input threshold voltage level of the receivers
on the active bus. This method will ensure that any glitch produced by insertion (or removal) of the card will not
cross the input threshold region of the receivers on the active bus, minimizing the effects of live-insertion noise.
This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that
damaging current will not backflow through the device when it is powered down. The device has isolation during
power off.
To ensure the high-impedance state during power up or power down, ON should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOIC DW
Tube
SN74CBT6800CDW
CBT6800C
SOIC DW
Tape and reel
SN74CBT6800CDWR
CBT6800C
SSOP DB
Tube
SN74CBT6800CDB
CT6800C
40
°C to 85°C
SSOP DB
Tape and reel
SN74CBT6800CDBR
CT6800C
40
°C to 85°C
SSOP (QSOP) DBQ
Tape and reel
SN74CBT6800CDBQR
CBT6800C
TSSOP PW
Tube
SN74CBT6800CPW
CT6800C
TSSOP PW
Tape and reel
SN74CBT6800CPWR
CT6800C
TVSOP DGV
Tape and reel
SN74CBT6800CDGVR
CT6800C
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUT
INPUT/OUTPUT
FUNCTION
INPUT
ON
INPUT/OUTPUT
A
FUNCTION
L
B
A port = B port
H
Z
Disconnect
B port = BIASV
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74CBT6800CDWG4 功能描述:數(shù)字總線開(kāi)關(guān) IC 10B FETBus Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:24 傳播延遲時(shí)間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel
SN74CBT6800CDWR 功能描述:數(shù)字總線開(kāi)關(guān) IC 10-Bit FET Bus Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:24 傳播延遲時(shí)間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel
SN74CBT6800CDWRE4 功能描述:數(shù)字總線開(kāi)關(guān) IC Octal Bus Trncvr & 3.3-5V W/3-St Otpt RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:24 傳播延遲時(shí)間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel
SN74CBT6800CDWRG4 功能描述:數(shù)字總線開(kāi)關(guān) IC 10B FETBus Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:24 傳播延遲時(shí)間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel
SN74CBT6800CPW 功能描述:數(shù)字總線開(kāi)關(guān) IC 10-Bit FET Bus Switch RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:24 傳播延遲時(shí)間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel
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