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參數(shù)資料
| 型號(hào)： | LT1139ACN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類(lèi)： | 通用總線功能 |
| 英文描述： | Octal Bus Transceivers With 3-State Outputs 20-PDIP 0 to 70 |
| 中文描述： | LINE TRANSCEIVER, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-24 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大小： | 199K |
| 代理商： | LT1139ACN |
7
LT1130A/LT1140A Series
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Shutdown to Driver Output
Receiver Short-Circuit Current
Driver Short-Circuit Current
Driver Output Waveforms
LT1137A TPC12
10
5
0
–10
–5
DRIVER OUTPUT
R
= 3k
C
L
= 2500pF
INPUT
DRIVER OUTPUT
R
L
= 3k
PI FU
V
CC
:
5V Input Supply Pin. Supply current drops to zero in
the shutdown mode. This pin should be decoupled with a
0.1
μ
F ceramic capacitor close to the package pin. Insuffi-
cient supply bypassing can result in low output drive levels
and erratic charge pump operation.
GND:
Ground Pin.
ON/OFF:
Control the operation mode of the device and is
TTL/CMOS compatible. A logic low puts the device in the
shutdown mode which reduces input supply curent to zero
and places all of the drivers and receivers in high imped-
ance state. 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 drivers
U
in a high impedance state. 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 4mA 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. With multiple
transceivers, the V
+
and V
–
pins may be paralleled into
common capacitors. For large numbers of transceivers,
increasing the size of the shared common storage capaci-
tors is recommended to reduce ripple.
TEMPERATURE (°C)
–55
S
20
25
30
25
75
LT1137A TPC10
15
10
–25
0
50
100
125
5
0
ISC
+
ISC
–
TEMPERATURE (°C)
–55
0
S
20
50
0
50
75
LT1137A TPC11
10
40
30
–25
25
100
125
ISC
+
ISC
–
LT1137A TPC13
DRIVER
OUTPUT HIGH
R
L
= 3k
ON/OFF PIN
DRIVER
OUTPUT LOW
R
L
= 3k
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| LT1139ACN#PBF | 功能描述:IC 4DRV/4RCV RS232 5V 24-DIP RoHS:是 類(lèi)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:27 系列:- 類(lèi)型:收發(fā)器 驅(qū)動(dòng)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(lèi)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 |
| LT1139ACS | 制造商:LINEAR_TECH 功能描述: |
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| LT1139ACSW#PBF | 功能描述:IC 4DRV/4RCV RS232 5V 24-SOIC RoHS:是 類(lèi)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:27 系列:- 類(lèi)型:收發(fā)器 驅(qū)動(dòng)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(lèi)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 |
| LT1139ACSW#TR | 功能描述:IC TXRX 5V RS232 LP CAPS 24SOIC RoHS:否 類(lèi)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:27 系列:- 類(lèi)型:收發(fā)器 驅(qū)動(dòng)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(lèi)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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