- 您现在的位置：买卖IC网 > PDF目录16542 > DC1786A (Linear Technology)BOARD DEMO LTC2871 PDF资料下载
参数资料
| 型号： | DC1786A |
| 厂商： | Linear Technology |
| 文件页数： | 36/36页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO LTC2871 |
| 设计资源： | DC1786A Design Files DC1786A Schematic |
| 标准包装： | 1 |
| 主要目的： | 接口，收发器，RS-232/RS-485 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | LTC2871 |
| 主要属性： | 3 个驱动器，3 个接收器 |
| 次要属性： | 3 V ~ 5.5 V 电源 |
| 已供物品： | 板 |
| 相关产品： | LTC2871CUHF#PBF-ND - IC TXRX RS485/RS422 38-QFN LTC2871IUHF#PBF-ND - IC TXRX RS485/RS422 38-QFN LTC2871CFE#PBF-ND - IC TXRX RS485/RS422 38-TSSOP LTC2871IFE#PBF-ND - IC TXRX RS485/RS422 38-TSSOP LTC2871CUHF#TRPBF-ND - IC TXRX RS485/RS422 38-QFN LTC2871IFE#TRPBF-ND - IC TXRX RS485/RS422 38-TSSOP LTC2871IUHF#TRPBF-ND - IC TXRX RS485/RS422 38-QFN LTC2871CFE#TRPBF-ND - IC TXRX RS485/RS422 38-TSSOP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页当前第36页
LTC2870/LTC2871
9
28701f
PIN FUNCTIONS
PIN NAME
LTC2870
QFN
LTC2870
TSSOP
LTC2871
QFN
LTC2871
TSSOP
DESCRIPTION
VCC
16, 20, 24
19, 23, 27
21, 27, 33
25, 31, 37 Input Supply (3V to 5.5V). Tie all three pins together and connect a 2.2μF or larger
capacitor between VCC (adjacent to VDD) and GND.
VL
25
28
35
1
Logic Supply (1.7V to 5.5V) for the receiver outputs, driver inputs, and control inputs.
Bypass this pin to GND with a 0.1μF capacitor if not tied tot VCC. Keep VL ≤ VCC for
proper operation. However, VL > VCC will not damage the device, provided that absolute
maximum limits are respected.
VDD
15
18
20
24
Generated Positive Supply Voltage for RS232 Driver (+7V). Connect 1μF capacitor
between VDD and GND.
VEE
1, 12, 29
4, 15, 29
1, 12, 16,
19, 39
5, 16, 20,
23, 39
Generated Negative Supply Voltage for RS232 Driver (–6.3V). Tie all pins together and
connect 1μF capacitor between VEE (adjacent to the CAP pin) and GND.
GND
10, 13,
18, 23
13, 16,
21, 26
14, 17,
25, 32
18, 21,
29, 36
Ground. Tie all four pins together.
CAP
11
14
15
19
Charge Pump Capacitor for Generated Negative Supply Voltage. Connect a 220nF
capacitor between CAP and SW.
SW
14
17
18
22
Switch Pin. Connect 10μH inductor between SW and VCC.
A
22
25
29
33
RS485 Positive Receiver Input (Full-Duplex Mode) or RS232 Receiver Input 1 (LTC2870).
B
21
24
28
32
RS485 Negative Receiver Input (Full-Duplex Mode) or RS232 Receiver Input 2 (LTC2870).
RA
2
5
RS485 Differential Receiver Output or RS232 Receiver Output 1.
RB
3
6
RS232 Receiver Output 2.
RO
34
38
RS485 Differential Receiver Output.
RIN1
31
35
RS232 Receiver Input 1.
RIN2
30
34
RS232 Receiver Input 2.
ROUT1
2
6
RS232 Receiver Output 1.
ROUT2
3
7
RS232 Receiver Output 2.
DIN1
8
12
RS232 Driver Input 1.
DIN2
9
13
RS232 Driver Input 2.
TYPICAL PERFORMANCE CHARACTERISTICS
RS232 Driver Outputs Enabling
and Disabling
VDD and VEE Powering Up
VDD and VEE Ripple
5V/DIV
2V/DIV
28701 G20
40μs/DIV
FEN
VDD
VEE
5V/DIV
28701 G19
40μs/DIV
TOP CURVES: FAST ENABLE
DX232
BOTTOM CURVES: SHUTDOWN
DX232
FEN = 1
FEN = 0
DOUT1
DOUT2
DOUT1
DX232
DOUT2
10mV/DIV
28701 G21
40μs/DIV
FAST ENABLE MODE,
ALL DRIVERS AND RECEIVERS DISABLED.
VDD RIPPLE
VEE RIPPLE
TA = 25°C, VCC = VL = 3.3V, unless otherwise noted.
相关PDF资料 |
PDF描述 |
|---|---|
| GCM24DCCS-S189 | CONN EDGECARD 48POS R/A .156 SLD |
| 6278016-3 | CABLE ASSY SC-SC DUPLEX MM 3M |
| 5503995-2 | CABLE ASSEM FIBER ST-ST 2 METER |
| ECO-S1HA152BA | CAP ALUM 1500UF 50V 20% SNAP |
| EEU-FR1J821 | CAP ALUM 820UF 63V 20% RADIAL |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1788A-B | 制造商:Linear Technology 功能描述:EVAL BOARD, LT4275B POE & PD CONTROLLER, Silicon Manufacturer:Linear Technology, |
| DC1788A-C | 制造商:Linear Technology 功能描述:EVAL BOARD, LT4275C POE & PD CONTROLLER, Silicon Manufacturer:Linear Technology, |
| DC1788B-A | 制造商:Linear Technology 功能描述:EVAL BOARD FOR LT4275 90W 制造商:Linear Technology 功能描述:LT4275 POWERED DEVICE CTRL EVAL BOARD 制造商:Linear Technology 功能描述:DEMO BOARD, LT4275, POWER OVER ETHERNET CONTROLLER, Silicon Manufacturer:Linear |
| DC178A | 功能描述:BOARD SAR ADC LTC1418 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| DC1792 | 功能描述:BOARD DAC LTC2756 RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:QuikEval™, SoftSpan™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
发布紧急采购，3分钟左右您将得到回复。