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參數資料
| 型號： | LTC1344IG#TR |
| 廠商： | Linear Technology |
| 文件頁數： | 11/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TERMINATOR CABLE MULTI 24SSOP |
| 標準包裝： | 1,800 |
| 類型： | 纜線 |
| 端子數： | 6 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
8
LTC1344
and B to ground C must be 150
±15. For the generator
termination, switches S1 and S2 are both on and the top
side of the center resistor is brought out to a pin so it can
be bypassed with an external capacitor to reduce common
mode noise as shown in Figure 12.
Any mismatch in the driver rise and fall times or skew in
the driver propagation delays will force current through
the center termination resistor to ground causing a high
frequency common mode spike on the A and B terminals.
The common mode spike can cause EMI problems that are
reduced by capacitor C1 which shunts much of the com-
mon mode energy to ground rather than down the cable.
The LATCH Pin
The LATCH pin (21) allows the select lines (M0, M1, M2
and DCE/DTE) to be shared with multiple LTC1344s, each
with its own LATCH signal. When the LATCH pin is held
low the select line input buffers are transparent. When the
LATCH pin is pulled high, the select line input buffers latch
the state of the Select pins so that changes on the select
lines are ignored until LATCH is pulled low again. If the
latch feature is not used, the LATCH pin should be tied to
ground.
APPLICATIONS INFORMATION
WU
U
A
CABLE
TERMINATION
LOAD
GENERATOR
BALANCED
INTERCONNECTING
CABLE
RECEIVER
A
'
50
50
125
B
C
B
'
C
'
1344 F10
125
50
50
Figure 10. Typical V.35 Interface
Z
S1
ON
S2
ON
124
LTC1344
V.35
RECEIVER
A
B
C
1344 F11
51.5
51.5
IZ
–3V
3V
12V
–7V
–0.8mA
1mA
VZ
Figure 11. V.35 Receiver Using the LTC1344
low side. However, all of Linear Technology’s V.35 receiv-
ers meet the RS485 input impedance specification as
shown in Figure 11, which insures compliance with the
V.35 specification when used with the LTC1344.
The generator differential impedance must be 50
to
150
and the impedance between shorted terminals A
S1
ON
S2
ON
124
LTC1344
V.35
DRIVER
A
B
C
1344 F12
51.5
51.5
C1
100pF
Figure 12. V.35 Driver Using the LTC1344
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相關代理商/技術參數 |
參數描述 |
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| LTC1345CNW | 功能描述:IC TXRX V.35 SINGLE SUPPLY 28DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/接收器數: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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| LTC1345CNW#PBF | 功能描述:IC TXRX V.35 SINGLE SUPPLY 28DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/接收器數: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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| LTC1345CSW | 功能描述:IC TXRX V.35 SINGL SUPPLY 28SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/接收器數: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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| LTC1345CSW#PBF | 功能描述:IC TXRX V.35 SINGL SUPPLY 28SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/接收器數: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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| LTC1345CSW#TR | 功能描述:IC TXRX V.35 SGL SUPPLY 28SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發(fā)器 系列:- 標準包裝:250 系列:- 類型:收發(fā)器 驅動器/接收器數: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-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
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