參數(shù)資料
型號(hào)： HIN240
廠商： HARRIS SEMICONDUCTOR
元件分類： 通用總線功能
英文描述： 5V Powered RS-232 Transmitters/Receivers(正5V電源電壓、RS-232收發(fā)器)
中文描述： LINE TRANSCEIVER
文件頁數(shù)： 9/20頁
文件大?。?/td> 626K
代理商： HIN240
9
Detailed Description
The HIN232 thru HIN241 family of RS-232
transmitters/receivers are powered by a single +5V power
supply (except HIN239), feature low power consumption, and
meet all ElA RS-232C and V.28 specifications. The circuit is
divided into three sections: The charge pump, transmitter, and
receiver.
Charge Pump
An equivalent circuit of the charge pump is illustrated in
Figure 1. The charge pump contains two sections: the voltage
doubler and the voltage inverter. Each section is driven by a
two phase, internally generated clock to generate +10V and
-10V. The nominal clock frequency is 16kHz. During phase
one of the clock, capacitor C1 is charged to V
CC
. During
phase two, the voltage on C1 is added to V
CC
, producing a
signal across C3 equal to twice V
CC
. During phase one, C2 is
also charged to 2V
CC
, and then during phase two, it is
inverted with respect to ground to produce a signal across C4
equal to -2V
CC
. The charge pump accepts input voltages up
to 5.5V. The output impedance of the voltage doubler section
(V+) is approximately 200
, and the output impedance of the
voltage inverter section (V-) is approximately 450
. A typical
application uses 1
μ
F capacitors for C1-C4, however, the value
is not critical. Increasing the values of C1 and C2 will lower the
output impedance of the voltage doubler and inverter,
increasing the values of the reservoir capacitors, C3 and C4,
lowers the ripple on the V+ and V- supplies.
During shutdown mode (HIN236, HIN240 and HIN241),
SHUTDOWN control line set to logic “1”, the charge pump is
turned off, V+ is pulled down to V
CC
, V- is pulled up to GND,
and the supply current is reduced to less than 10
μ
A. The
transmitter outputs are disabled and the receiver outputs are
placed in the high impedance state.
TIMING CHARACTERISTICS
Baud Rate (1 Transmitter Switching)
R
L
= 3k
120
-
-
kbps
Output Enable Time, t
EN
HIN236, HIN239, HIN240, HIN241
-
400
-
ns
Output Disable Time, t
DIS
HIN236, HIN239, HIN240, HIN241
-
250
-
ns
Propagation Delay, t
PD
RS-232 to TTL
-
0.5
-
μ
s
Instantaneous Slew Rate SR
C
L
= 10pF, R
L
= 3k
, T
A
= 25
o
C (Note 4)
-
-
30
V/
μ
s
Transition Region Slew Rate, SR
T
R
L
= 3k
, C
L
= 2500pF Measured from +3V to -3V or
-3V to +3V, 1 Transmitter Switching
-
3
-
V/
μ
s
TRANSMITTER OUTPUTS
Output Voltage Swing, T
OUT
Transmitter Outputs, 3k
to Ground
±
5
±
9
±
10
V
Output Resistance, T
OUT
V
CC
= V+ = V- = 0V, V
OUT
=
±
2V
300
-
-
RS-232 Output Short Circuit Current, I
SC
T
OUT
shorted to GND
-
±
10
-
mA
NOTE:
4.
Guaranteed by design.
Electrical Specifications
Test Conditions: V
CC
= +5V
±
10%, T
A
= Operating Temperature Range
(Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
+
-C1
+
-C3
+
-C2
+
-C4
S1
S2
S5
S6
S3
S4
S7
S8
V
CC
GND
RC
OSCILLATOR
V
CC
GND
V+ = 2V
CC
GND
V- = -(V+)
C1
+
C1-
C2
-
C2
+
VOLTAGE INVERTER
VOLTAGE DOUBLER
FIGURE 1. CHARGE PUMP
HIN232, HIN236, HIN237, HIN238, HIN239, HIN240, HIN241
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HIN240CN 功能描述:IC 5DRVR/5RCVR RS232 5V 44-MQFP 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:1,000 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-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR)
HIN240CNZ 功能描述:RS-232接口集成電路 W/ANNEAL RS232 5V 5D /5R 1UF CAPS 44MQFP 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:
HIN240CNZ-T 功能描述:RS-232接口集成電路 W/ANNEAL RS232 5V 5D /5R 1UF CAPS 44MQFP 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:
HIN240IN 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:
HIN241 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+5V Powered RS-232 Transmitters/Receivers
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