參數(shù)資料
型號: LTC2804IGN-1#TRPBF
廠商: Linear Technology
文件頁數(shù): 17/18頁
文件大?。?/td> 0K
描述: IC TXRX RS232 DUAL 16-SSOP
標準包裝: 2,500
類型: 收發(fā)器
驅動器/接收器數(shù): 2/2
規(guī)程: RS232
電源電壓: 1.8 V ~ 5.5 V
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應商設備封裝: 16-SSOP
包裝: 帶卷 (TR)
LTC2801/LTC2802/
LTC2803/LTC2804
2801234fe
Pin FunctionS
Mode control
PIN NAME
PIN NUMBER
COMMENTS
2801
2802
2803
2804
2803-1
2804-1
VCC
3
5
Input Supply (1.8V-5.5V). Bypass to GND with a 1F capacitor.
VDD
4
6
Generated Positive Supply Voltage for RS-232 Driver (7V). Connect a 1F capacitor between
VDD and GND.
VEE
13*
17*
9
Generated Negative Supply Voltage for RS-232 Driver (–6.3V). Connect a 1F capacitor
between VEE and GND.
SW
5
7
Switch Pin. Connect a 10H inductor between SW and VCC.
GND
6
8
Ground.
CAP
7
9
10
Charge Pump Capacitor for Generated Negative Supply Voltage. Connect a 220nF capacitor
between CAP and SW.
VL
10
12
Logic Supply (1.8V-5.5V) for the receiver outputs, driver inputs, and control inputs. This pin
should be bypassed to GND with a 220nF capacitor if it’s not tied to VCC.
TIN (T1IN, T2IN)
11
14, 13
14, 13 Driver Input(s), referenced to VL.
TOUT (T1OUT, T2OUT)
2
3, 4
RS-232 Driver Output(s).
RIN (R1IN, R2IN)
1
1, 2
RS-232 Receiver Input(s). Includes internal 5kΩ termination resistor(s).
ROUT (R1OUT, R2OUT)
12
16, 15
16, 15 Receiver Output(s), referenced to VL. Output is short-circuit protected to GND/VCC/VL, and is
high impedance in Shutdown mode, allowing data line sharing.
PS
8
10
Power Supply control pin, referenced to VL. Enables the integrated DC-DC converter.
MODE
9
11
Mode control pin, referenced to VL. See Table 1 for functionality.
ON/OFF
11
Transceiver enable pin, referenced to VL. A logic low puts the device in Shutdown mode and
places both driver and receiver outputs in a high impedance state.
*Backside thermal pad
Table 1. LTC2801, LTC2802, LTC2803, LTC2804
MODE NAME
PS
MODE
RECEIVER
OUTPUT(S)
DC-DC
DRIVER
OUTPUT(S)
IVCC*
IVL*
SHUTDOWN
L
HI-Z
OFF
HI-Z
1A
RECEIVER(S) ACTIVE
L
H
ON
OFF
HI-Z
1A
15A
DRIVER(S) DISABLED
H
L
ON
HI-Z
2.1mA
80A OR
150A
NORMAL
H
ON
2.3mA
80A OR
150A
Table 2. LTC2803-1, LTC2804-1
MODE NAME
ON/OFF
RECEIVER
OUTPUTS
DC-DC
DRIVER
OUTPUTS
IVCC*
IVL*
SHUTDOWN
L
HI-Z
OFF
HI-Z
1A
NORMAL
H
ON
2.3mA
150A
*Typical currents for static drivers. Normal mode currents are for unloaded outputs.
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