- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384477 > ICL3237ECA (INTERSIL CORP) 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors PDF資料下載
參數(shù)資料
| 型號(hào)： | ICL3237ECA |
| 廠商： | INTERSIL CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | TRIPLE LINE TRANSCEIVER, PDSO28 |
| 封裝： | PLASTIC, MO-150AH, SSOP-28 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 302K |
| 代理商： | ICL3237ECA |
7
Receiver ENABLE Control
This device also features an EN input to control the receiver
outputs. Driving EN high disables all the inverting (standard)
receiver outputs placing them in a high impedance state.
This is useful to eliminate supply current, due to a receiver
output forward biasing the protection diode, when driving the
input of a powered down (V
CC
= GND) peripheral (see
Figure 2). The enable input has no effect on transmitter nor
monitor (R
OUTB
) outputs.
MegaBaud Selection
In normal operating mode (MBAUD = GND), the ICL3237E
transmitters guarantee a 250kbps data rate with worst-case
loads of 3k
in parallel with 1000pF. This provides
compatibility with PC-to-PC communication software, such
as Laplink.
For higher speed serial communications, the ICL3237E
features MegaBaud operation. In MegaBaud operating mode
(MBAUD = V
CC
), the ICL3237E transmitters guarantee a
1Mbps data rate with worst-case loads of 3k
in parallel with
250pF for 3.0V < V
CC
< 4.5V. For 5V
±
10% operation, the
ICL3237E transmitters guarantee a 1Mbps data rate with
worst-case loads of 3k
in parallel with 1000pF.
Capacitor Selection
The charge pumps require 0.1
μ
F capacitors for 3.3V (5%
tolerance) operation. For other supply voltages refer to Table
3 for capacitor values. Do not use values smaller than those
listed in Table 3. Increasing the capacitor values (by a factor
of 2) reduces ripple on the transmitter outputs and slightly
reduces power consumption. C
2
, C
3
, and C
4
can be
increased without increasing C
1
’s value, however, do not
increase C
1
without also increasing C
2
, C
3
, and C
4
to
maintain the proper ratios (C
1
to the other capacitors).
When using minimum required capacitor values, make sure
that capacitor values do not degrade excessively with
temperature. If in doubt, use capacitors with a larger nominal
value. The capacitor’s equivalent series resistance (ESR)
usually rises at low temperatures and it influences the
amount of ripple on V+ and V-.
Power Supply Decoupling
In most circumstances a 0.1
μ
F bypass capacitor is
adequate. In applications that are particularly sensitive to
power supply noise, decouple V
CC
to ground with a
capacitor of the same value as the charge-pump capacitor C
1
.
Connect the bypass capacitor as close as possible to the IC.
TABLE 2. POWERDOWN AND ENABLE LOGIC TRUTH TABLE
SHDN INPUT
L
L
H
H
EN INPUT
L
H
L
H
TRANSMITTER OUTPUTS
High-Z
High-Z
Active
Active
RECEIVER OUTPUTS
Active
High-Z
Active
High-Z
R
OUTB
OUTPUT
Active
Active
Active
Active
MODE OF OPERATION
Manual Powerdown
Manual Powerdown w/Rcvr. Disabled
Normal Operation
Normal Operation w/Rcvr. Disabled
FIGURE 2. POWER DRAIN THROUGH POWERED DOWN
PERIPHERAL
OLD
V
CC
POWERED
DOWN
UART
GND
SHDN = GND
V
CC
Rx
Tx
V
CC
CURRENT
FLOW
V
OUT
=
V
CC
RS-232 CHIP
FIGURE 3. DISABLED RECEIVERS PREVENT POWER DRAIN
ICL3237E
TRANSITION
DETECTOR
R
X
T
X
R1
OUTB
R1
OUT
T1
IN
V
CC
V
CC
TO
R1
IN
T1
OUT
V
OUT
=
HI-Z
POWERED
DOWN
UART
SHDN = GND, EN = V
CC
WAKE-UP
LOGIC
TABLE 3. REQUIRED CAPACITOR VALUES
V
CC
(V)
C
1
(
μ
F)
C
2
, C
3
, C
4
(
μ
F)
3.0 to 3.6 (3.3V
±
10%)
0.22
0.22
3.15 to 3.6 (3.3V
±
5%)
0.1
0.1
4.5 to 5.5
0.047
0.33
3.0 to 5.5
0.22
1.0
ICL3237E
Laplink is a registered trademark of Traveling Software.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICL3237EIA | PC Board Connector; No. of Contacts:36; Pitch Spacing:0.1"; No. of Rows:1; Mounting Type:PCB Straight Thru Hole; Contact Material:Copper Alloy; Gender:Female; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No RoHS Compliant: No |
| ICL3237EIAZ | PC Board Connector; No. of Contacts:36; Pitch Spacing:0.1"; No. of Rows:1; Mounting Type:PCB Straight Thru Hole; Contact Material:Copper Alloy; Gender:Female; Terminal Type:Solder Tail RoHS Compliant: Yes |
| ICL7109 | 12-Bit,Microprocessor-Compatible A/D Converter(12位、微處理器兼容的A/D轉(zhuǎn)換器) |
| ICL7137 | 3 1/2 Digit LED, Low Power Display,A/D Converters(3 1/2 位用于低功耗LED的A/D轉(zhuǎn)換器) |
| ICL7605 | HIGH RELIABILITY COMMUTATING AUTO - ZERO ( CAZ ) INSTRUMENTATION AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICL3237ECA-T | 功能描述:IC 5DRVR/3RCVR RS232 3V 28-SSOP 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:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 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:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
| ICL3237ECAZ | 功能描述:RS-232接口集成電路 RS232 3V 5D/3R 15KV SHTDWN COM RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| ICL3237ECAZ-T | 功能描述:RS-232接口集成電路 RS232 3V 5D/3R 15KV SHTDWN COMEL RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| ICL3237ECV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ICL3237EIA | 功能描述:IC 5DRVR/3RCVR RS232 3V 28-SSOP 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:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 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:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。