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| 型号： | NM232DDC |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 1/5页 |
| 文件大小： | 0K |
| 描述： | ISOLATED INTERFACE DL EIA-232-D |
| 标准包装： | 15 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.667"，16.95mm） |
| 供应商设备封装： | 24-DIP |
| 包装： | 管件 |
| 产品目录页面： | 2721 (CN2011-ZH PDF) |
| 其它名称： | 811-1444-5 |
NM232DDC Series
Isolated Dual EIA-232-D Transmitter and Receiver
KII_NM232DD.A04 Page 1 of 5
www.murata-ps.com
www.murata-ps.com/support
For full details go to
www.murata-ps.com/rohs
ELECTRICAL CHARACTERISTICS
Parameter
Test conditions
Min..
Typ.
Max.
Units
High threshold input logic, VIH
TXIN, SHUTDOWN, ENABLE
1.8
2.4
V
Low threshold input logic, VIL
TXIN, SHUTDOWN, ENABLE
0.8
1.3
V
Input Hysteresis, ΔVT
TXIN
0.5
V
Leakage Current, IL
TXIN , SHUTDOWN or ENABLE = VCC
10
μA
Input capacitance, CIN
TXIN
5.0
pF
Low level output voltage, VOL
IOUT = 3.2mA
0.4
V
High level output voltage, VOH
IOUT = -1.0mA
2.4
V
Input pull up current
VIN = OV
4.0
20
μA
±VREF Current
TXOUT = 3kΩ, RXOUT = 2.2kΩ
3.0
mA
ELECTRICAL CHARACTERISTICS - EIA-232-D
Parameter
Test conditions
Min..
Typ.
Max.
Units
Positive going threshold, VT+
RXIN
1.8
3.0
V
Negative going threshold, VT-
RXIN
0.6
1.2
V
Input Hysteresis, ΔVT
RXIN
0.6
V
Input resistance
RXIN
3.0
7.0
kΩ
Output voltage, VPP
TXOUT, RL=3kΩ to ISO GND
±5.0
±7.0
V
Output leakage current, IL
SHUTDOWN=VCC, TXOUT=±15V
-10
10
μA
Output slew rate, SR
RL=3kΩ, CL=2500pF
3.0
30
V/μs
Propagation delay, TL
Logic to RS232
20
μs
Propagation delay, TR
RS232 to logic
10
μs
Transmission rate
RL=3kΩ, CL=2500pF
9.6
kbps
Supply voltage, VCC
4.5
5.5
V
Supply current, ICC
TXIN=0.8V, TXOUT=3kΩ,
RXIN=3.0V, RXOUT=2.2kΩ
53
mA
Shutdown current ICC
SHUTDOWN=1
1.0
10
μA
ENABLE input current, IEN
ENABLE=OV to VCC
1.0
μA
Shutdown input current, ISHUTDOWN
SHUTDOWN=OV to VCC
1.0
μA
MTTF1
187
kHrs
TEMPERATURE CHARACTERISTICS
Parameter
Min..
Typ.
Max.
Units
Operating free-air temperature range
0
70
C
Storage temperature range
-55
125
C
ABSOLUTE MAXIMUM RATINGS
Supply voltage VCC with respect to pin 10
-0.3V to +6V
Input voltage to logic pins 3, 7, 8, & 11 with respect to
pin 10
-0.3V to
VCC+0.3V
Voltages with respect to ISO GND pin 22
EIA-232-D input voltage, pins 17 & 18
-30V to +30V
EIA-232-D input voltage, pins 19 & 20
-15V to +15V
Positive input voltage, pins 16 & 21
+14V
Negative input voltage, pin 23
-14V
Short circuit on pins 19 & 20
Indenite
Power dissipation
700mW
NM232DDC maximum data rate
9.6kbps
Lead case temperature 1.5mm from case for 10 seconds
300C
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min..
Typ.
Max.
Units
Isolation test voltage
Flash tested for 1 second
1500
Vrms
1. Calulated using MIL-HDBK-217F.
All data taken at TA=25°C, VCC=5V.
FEATURES
RoHS compliant
Single 5V supply
50μW low power shutdown
TTL/CMOS Logic compatible
EIA-232-D/E and CCITT V.28 compatible
Dual transmitters and receivers
1.5kVrms Isolation
DESCRIPTION
The NM232DDC is an electrically isolated dual
transmitter and receiver designed to inter-
face data terminal equipment (DTE) with data
communications equipment (DCE). The device
provides two data receive channels and two data
transmit channels. Each channel is EIA-232-D,
EIA-232-E and CCITT V.28 compatible at the
interface boundary and TTL/CMOS compatible at
the logic connections. No external components
are needed and a single 5V input supply powers
all functions either side of the isolation boundary.
A low-power shutdown mode and high impedance
state for receiver outputs is effected via two pins,
SHUTDOWN and ENABLE. The device is supplied
in a low prole 24 pin DIL package.
NM
23
ELECTRICAL CHARACTERISTICS
NOT RECOMMENDED
OT RECOMMENDED
FOR NEW DESIGNS
Isolate
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