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參數(shù)資料
| 型號(hào)： | MAX3245CAI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | LINE TRANSCEIVER|CMOS|3 DRIVER|5 RCVR|SSOP|28PIN|PLASTIC |
| 中文描述： | TRIPLE LINE TRANSCEIVER, PDSO28 |
| 封裝： | SSOP-28 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大小： | 235K |
| 代理商： | MAX3245CAI |
M
When
FORCEOFF
is driven to ground or when the Auto-
Shutdown Plus circuitry senses that all receiver and
transmitter inputs are inactive for more than 30sec, the
transmitters are disabled and the outputs go into a high-
impedance state. When powered off or shut down, the
outputs can be driven to ±12V. The transmitter inputs
do not have pull-up resistors. Connect unused inputs to
GND or V
CC
.
RS -232 Rec eivers
The receivers convert RS-232 signals to CMOS-logic
output levels. The MAX3224–MAX3227 feature inverting
outputs that always remain active (Table 1). The
MAX3244/MAX3245 have inverting three-state outputs
that are high impedance when shut down (
FORCEOFF
= GND) (Table 1).
1μA S upply Current, 1Mbps, 3.0V to 5.5V,
RS -232 Transc eivers with AutoS hutdown Plus
8
_______________________________________________________________________________________
MAX3244
MAX3245
I/O
CHIP
WITH
UART
CPU
RS-232
POWER-
MANAGEMENT
UNIT OR
KEYBOARD
CONTROLLER
FORCEOFF
FORCEON
INVALID
Figure 1. Interface Under Control of PMU
MAX3244
MAX3245
T1OUT
R2OUTB
Tx
5k
UART
V
CC
T1IN
THREE-STATED
LOGIC
TRANSITION
DETECTOR
R2IN
PROTECTION
DIODE
R2OUT
FORCEOFF = GND
V
CC
TO
μ
P
Rx
PREVIOUS
RS-232
Tx
UART
SHDN = GND
V
CC
V
CC
GND
Rx
5k
a)
OLDER RS-232: POWERED-DOWN UART DRAWS CURRENT FROM ACTIVE
RECEIVER OUTPUT IN SHUTDOWN.
b)
NEW MAX3244/MAX3245: IN SHUTDOWN, R2OUTB IS USED TOMONITOR
EXTERNAL DEVICES AND R2OUT IS THREE STATED, ELIMINATING A CURRENT
PATH THROUGH THE UART’S PROTECTION DIODE.
GND
PROTECTION
DIODE
I
I
Figure 2. The MAX3244/MAX3245 detect RS-232 activity when
the UART and interface are shut down.
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PDF描述 |
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| MAX3245EAI | LINE TRANSCEIVER|CMOS|3 DRIVER|5 RCVR|SSOP|28PIN|PLASTIC |
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| MAX3229EBV | +2.5V to +5.5V RS-232 Transceivers in UCSP |
| MAX3229EEBV | 【15kV ESD-Protected @.5V to %.5V RS-232 Transceivers in UCSP |
| MAX3228-MAX3229 | +2.5V to +5.5V RS-232 Transceivers in UCSP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3245CAI+ | 功能描述:RS-232接口集成電路 3-5.5V 1Mbps Transceiver 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: |
| MAX3245CAI+ | 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW)) |
| MAX3245CAI+T | 功能描述:RS-232接口集成電路 3-5.5V 1Mbps Transceiver 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: |
| MAX3245CAI-T | 功能描述:RS-232接口集成電路 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: |
| MAX3245CWI | 功能描述:RS-232接口集成電路 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: |
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