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參數(shù)資料
| 型號： | LT1237 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Advanced Low Power Three Driver, Five Receiver RS232 Transceiver.(先進的低功率3發(fā)4收RS232收發(fā)器) |
| 中文描述： | 先進的低功耗三驅(qū)動器，接收器的RS232收發(fā)器五。（先進的低功率3發(fā)4收的RS232收發(fā)器） |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 178K |
| 代理商： | LT1237 |
5
LT1237
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Receiver Short-Circuit Current
Driver Short-Circuit Current
TEMPERATURE (
°
C)
–55
S
20
25
30
25
75
1237 G10
15
10
–25
0
50
100
125
5
0
I
SC+
I
SC–
TEMPERATURE (
°
C)
–55
0
S
20
50
0
50
75
1237 G11
10
40
30
–25
25
100
125
RX1 TO RX4
I
SC+
RX1 TO RX4
I
SC–
RX5 I
SC–
RX5 I
SC+
Receiver Output Waveforms
DRIVER OUTPUT
R
L
= 3k
DRIVER OUTPUT
R
= 3k
C
L
= 2500pF
RX5 OUTPUT
C
L
= 50pF
1237 G12
RX1 TO RX4
OUTPUT
C
L
= 50pF
INPUT
1237 G13
INPUT
Driver Output Waveforms
PI FU
V
CC
:
5V Input Supply Pin. This pin should be decoupled
with a 0.1
μ
F ceramic capacitor close to the package pin.
Insufficient supply bypassing can result in low output
drive levels and erratic charge pump operation.
GND:
Ground Pin.
ON/OFF:
TTL/CMOS Compatible Operating Mode Control.
A logic low puts the device in the low power shutdown
mode. All three drivers and four receivers (RX1, RX2, RX3,
and RX4) assume a high impedance output state in shut-
down. Only receiver RX5 remains active while the trans-
ceiver is in shutdown. The transceiver consumes only
60
μ
A of supply current while in shutdown. A logic high
fully enables the transceiver.
DRIVER DISABLE:
This pin provides an alternate control
for the charge pump and RS232 drivers. A logic high on
this pin shuts down the charge pump and places all driver
U
outputs in a high impedance state. All five receivers remain
active under these conditions. Floating the driver disable
pin or driving it to a logic low level fully enables the
transceiver. A logic low on the ON/OFF pin supersedes the
state of the DRIVER DISABLE pin. Supply current drops to
3mA when in driver disable mode.
V
+
:
Positive Supply Output (RS232 Drivers). V
+
≈
2V
CC
–
1.5V. This pin requires an external charge storage capaci-
tor C
≥
1.0
μ
F, tied to ground or V
CC
. Larger value capaci-
tors may be used to reduce supply ripple. The ratio of the
capacitors on V
+
and V
–
should be greater than 5 to 1.
V
–
:
Negative Supply Output (RS232 Drivers). V
–
≈
–(2V
CC
– 2.5V). This pin requires an external charge
storage capacitor C
≥
0.1
μ
F. See the Applications Infor-
mation section for guidance in choosing filter capacitors
for V
+
and V
–
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1237C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:5V RS232 Transceiver with Advanced Power Management and One Receiver Active in Shutdown |
| LT1237CG | 功能描述:IC TXRX 5V RS232 ADV LOPWR28SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:線路收發(fā)器 驅(qū)動器/接收器數(shù):5/3 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:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:Digi-Reel® 產(chǎn)品目錄頁面:918 (CN2011-ZH PDF) 其它名稱:296-25096-6 |
| LT1237CG#PBF | 功能描述:IC TXRX 5V RS232 ADV LOPWR28SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:線路收發(fā)器 驅(qū)動器/接收器數(shù):5/3 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:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:Digi-Reel® 產(chǎn)品目錄頁面:918 (CN2011-ZH PDF) 其它名稱:296-25096-6 |
| LT1237CG#TR | 功能描述:IC TXRX 5V RS232 ADV LOPWR28SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
| LT1237CG#TRPBF | 功能描述:IC TXRX 5V RS232 ADV LOPWR28SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:27 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):3/3 規(guī)程:RS232，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件 |
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