- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383083 > ICL3310 (Intersil Corporation) +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver PDF資料下載
參數(shù)資料
| 型號(hào)： | ICL3310 |
| 廠商： | Intersil Corporation |
| 英文描述： | +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| 中文描述： | 3V至5.5V，1微安，250kbps的和RS - 232發(fā)送器/接收器 |
| 文件頁(yè)數(shù)： | 5/9頁(yè) |
| 文件大?。?/td> | 158K |
| 代理商： | ICL3310 |
5
Transmitter inputs float if left unconnected (there are no pull-
up resistors), and may cause I
CC
increases. Connect
unused inputs to GND for the best performance.
Receivers
The ICL3310 contains standard inverting receivers that
three-state via the SHDN control line. Receivers driving
powered down peripherals must be disabled to prevent
current flow through the peripheral’s protection diodes (see
Figures 2 and 3).
All the receivers convert RS-232 signals to CMOS output
levels and accept inputs up to
±
30V while presenting the
required 3k
to 7k
input impedance (see Figure 1) even if
the power is off (V
CC
= 0V). The receivers’ Schmitt trigger
input stage uses hysteresis to increase noise immunity and
decrease errors due to slow input signal transitions.
Low Power Operation
This 3V device requires a nominal supply current of 0.3mA,
even at V
CC
= 5.5V, during normal operation (not in
powerdown mode). This is considerably less than the 11mA
current required by comparable 5V RS-232 devices,
allowing users to reduce system power simply by replacing
the old style device with the ICL3310.
Low Power, Pin Compatible Replacement
Pin compatibility with existing 5V products (e.g., MAX222),
coupled with the wide operating supply range, make the
ICL3310 a potential lower power, higher performance drop-
in replacement for existing 5V applications. As long as the
±
5V RS-232 output swings are acceptable, and transmitter
pull-up resistors aren’t required, the ICL3310 should work in
most 5V applications.
When replacing a device in an existing 5V application, it is
acceptable to terminate C
3
to V
CC
as shown on the “Typical
Operating Circuit”. Nevertheless, terminate C
3
to GND if
possible, as slightly better performance results from this
configuration.
Powerdown Functionality
The already low current requirement drops significantly
when the device enters powerdown mode. In powerdown,
supply current drops to 1
μ
A, because the on-chip charge
pump turns off (V+ collapses to V
CC
, V- collapses to GND),
and the transmitter and receiver outputs three-state. This
micro-power mode makes these devices ideal for battery
powered and portable applications.
Software Controlled (Manual) Powerdown
The ICL3310 may be forced into its low power, standby state
via a simple shutdown (SHDN) pin (see Figure 4). Driving
this pin high enables normal operation, while driving it low
forces the IC into it’s powerdown state. The time required to
exit powerdown, and resume transmission is less than 50
μ
s.
Connect SHDN to V
CC
if the powerdown function isn’t
needed.
TABLE 2. POWERDOWN AND ENABLE LOGIC TRUTH TABLE
SHDN
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
MODE OF OPERATION
H
Active
Active
Normal Operation
L
High-Z
High-Z
Manual Powerdown
R
XOUT
GND
≤
V
ROUT
≤
V
CC
5k
R
XIN
-25V
≤
V
RIN
≤
+25V
GND
V
CC
FIGURE 1. INVERTING RECEIVER CONNECTIONS
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
ICL3310
TRANSITION
DETECTOR
R
X
T
X
V
CC
V
CC
TO
V
OUT
=
HI-Z
WAKE-UP
LOGIC
POWERED
DOWN
UART
V-
ICL3310
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICL3310CB | +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL3310CB-T | +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL3310IB | +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL3310IB-T | +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL7104-14 | 14-BitMicroprocessor-Compatible, 2-Chip, A/D Converter(14位、微處理器兼容的2片A/D轉(zhuǎn)換器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICL3310CB | 制造商:Rochester Electronics LLC 功能描述:RS232 3V 2D/2R SHUTDOWN 18SOIC COM - Bulk |
| ICL3310CB-T | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL3310E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+/- 15kV ESD Protected, +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL3310ECA | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+/- 15kV ESD Protected, +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
| ICL3310ECA-T | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+/- 15kV ESD Protected, +3V to +5.5V, 1 Microamp, 250kbps, RS-232 Transmitter/Receiver |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。