參數(shù)資料
型號(hào)： LTC2846CG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 通用總線功能
英文描述： Octal Buffer/Driver With 3-State OUtputs 20-TVSOP -40 to 85
中文描述： TRIPLE LINE TRANSCEIVER, PDSO36
封裝： 0.209 INCH, PLASTIC, SSOP-36
文件頁(yè)數(shù)： 11/24頁(yè)
文件大?。?/td> 322K
代理商： LTC2846CG
11
LTC2846
sn2846 2846fs
Figure 15. V.28 Driver Propagation Delays
Figure 16. V.28 Receiver Propagation Delays
SWITCHU
W
W
APPLICATIOU
W
U
U
3V
0V
1.5V
0V
–3V
3V
1.5V
0V
3V
SR = 6V
–3V
t
PHL
t
f
V
O
–V
O
D
A
t
PLH
t
r
2846 F15
SR = 6V
t
f
t
r
V
IH
V
IL
1.5V
1.65V
1.5V
1.65V
t
PHL
V
OH
R
V
OL
A
t
PLH
2846 F16
Overview
The LTC2846 consists of a boost switching regulator, a
charge pump and a 3-driver/3-receiver transceiver. The
boost switching regulator generates a 5V V
CC
from the
3.3V input at V
IN
to power the charge pump and trans-
ceiver. The charge pump generates the V
DD
and V
EE
supplies. The LTC2846’s V
CC,
V
DD
and V
EE
supplies can
be used to power a companion chip like the LTC2844 or
LTC2845. The receiver outputs are driven between 0V and
V
IN
to interface with 3.3V logic.
The LTC2846 and LTC2844 form a complete software-
selectable DTE or DCE interface port that supports the
RS232, RS449, EIA530, EIA530-A, V.35, V.36 and X.21
protocols. Cable termination is provided on-chip, elimi-
nating the need for discrete termination designs.
A complete DCE-to-DTE interface operating in EIA530
mode is shown in Figure 17. The LTC2846 half of each port
is used to generate and appropriately terminate the clock
and data signals. The LTC2844 is used to generate the
control signals along with LL (Local Loopback).
Mode Selection
The interface protocol is selected using the mode select
pins M0, M1 and M2 (see Table 1).
For example, if the port is configured as a V.35 interface,
the mode selection pins should be M2 = 1, M1 = 0, M0 =0.
For the control signals, the drivers and receivers will
operate in V.28 (RS232) electrical mode. For the clock and
data signals, the drivers and receivers will operate in V.35
electrical mode. The DCE/DTE pin will configure the port
for DCE mode when high, and DTE when low.
The interface protocol may be selected simply by plugging
the appropriate interface cable into the connector. The
mode pins are routed to the connector and are left uncon-
nected (1) or wired to ground (0) in the cable as shown in
Figure 18. The internal pull-up current sources will ensure
a binary 1 when a pin is left unconnected.
The mode selection may also be accomplished by using
jumpers to connect the mode pins to ground or V
IN
.
相關(guān)PDF資料
PDF描述
LTC2846IG 3.3V Software-Selectable Multiprotocol Transceiver with Termination
LTC2900 Octal Buffer/Driver With 3-State OUtputs 20-TVSOP -40 to 85
LTC2900-1CDD Programmable Quad Supply Monitor with Adjustable Reset Timer
LTC2900-1CMS Programmable Quad Supply Monitor with Adjustable Reset Timer
LTC2900-1IDD Programmable Quad Supply Monitor with Adjustable Reset Timer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2846CG#PBF 功能描述:IC TXRX 3.3V MULTIPROTCOL 36SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:線路收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):5/3 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:Digi-Reel® 產(chǎn)品目錄頁(yè)面:918 (CN2011-ZH PDF) 其它名稱:296-25096-6
LTC2846CG#TR 功能描述:IC TXRX 3.3V MULTIPROTCOL 36SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
LTC2846CG#TRPBF 功能描述:IC TXRX 3.3V MULTIPROTCOL 36SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
LTC2846IG 功能描述:IC TXRX 3.3V MULTIPROTCOL 36SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR)
LTC2846IG#PBF 功能描述:IC TXRX 3.3V MULTIPROTCOL 36SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:RS-232 & USB Transceiver 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):1/1 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:296-19849-2
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*