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参数资料
| 型号： | LTC2846CG#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 22/24页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 3.3V MULTIPROTCOL 36SSOP |
| 标准包装： | 2,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/3 |
| 规程： | 多协议 |
| 电源电压： | 3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 36-SSOP |
| 包装： | 带卷 (TR) |
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NC (Pin 1): No Connect.
PGND (Pin 2): Boost Switching Regulator Power Ground.
Tie PGND to SGND.
VIN (Pin 3): Input Supply Pin. Input supply to boost
switching regulator. 3V
≤VIN ≤ 3.6V. Bypass with a 10F
capacitor to ground.
SHDN (Pin 4): Boost Switching Regulator Shutdown Pin.
Tie to 2.4V or more to enable regulator. Ground to shut
down.
C1– (Pin 5): Capacitor C1 Negative Terminal. Connect a
1
F capacitor between C1+ and C1–.
C1+ (Pin 6): Capacitor C1 Positive Terminal. Connect a
1
F capacitor between C1+ and C1–.
VDD (Pin 7): Generated Positive Supply Voltage for
V.28. Connect a 1
F capacitor to ground.
VCC (Pin 8): Input Supply Pin. Input supply to trans-
ceiver. 4.75V
≤ VCC ≤5.25V. Connect to output of switch-
ing regulator.
D1 (Pin 9): TTL Level Driver 1 Input.
D2 (Pin 10): TTL Level Driver 2 Input.
D3 (Pin 11): TTL Level Driver 3 Input.
R1 (Pin 12): CMOS Level Receiver 1 Output with Pull-Up
to VIN when Three-Stated.
R2 (Pin 13): CMOS Level Receiver 2 Output with Pull-Up
to VIN when Three-Stated.
R3 (Pin 14): CMOS Level Receiver 3 Output with Pull-Up
to VIN when Three-Stated.
M0 (Pin 15): TTL Level Mode Select Input 0 with Pull-Up
to VIN. See Table 1.
M1 (Pin 16): TTL Level Mode Select Input 1 with Pull-Up
to VIN. See Table 1.
VIN (Pin 17): Input Supply Pin. Input supply to transceiver.
3V
≤VIN ≤ 3.6V. Connect to Pin 3.
M2 (Pin 18): TTL Level Mode Select Input 2 with Pull-Up
to VIN. See Table 1.
DCE/DTE (Pin 19): TTL Level Mode Select Input with
Pull-Up to VIN. See Table 1.
R3 B (Pin 20): Receiver 3 Noninverting Input.
R3 A (Pin 21): Receiver 3 Inverting Input.
R2 B (Pin 22): Receiver 2 Noninverting Input.
R2 A (Pin 23): Receiver 2 Inverting Input.
D3/R1 B (Pin 24): Receiver 1 Noninverting Input and
Driver 3 Noninverting Output.
D3/R1 A (Pin 25): Receiver 1 Inverting Input and Driver 3
Inverting Output.
D2 B (Pin 26): Driver 2 Noninverting Output.
D2 A (Pin 27): Driver 2 Inverting Output.
D1 B (Pin 28): Driver 1 Noninverting Output.
D1 A (Pin 29): Driver 1 Inverting Output.
GND (Pin 30): Transceiver Ground.
VEE (Pin 31): Generated Negative Supply Voltage. Connect
a 3.3
F capacitor to GND.
C2 – (Pin 32): Capacitor C2 Negative Terminal. Connect a
1
F capacitor between C2+ and C2–.
C2 + (Pin 33): Capacitor C2 Positive Terminal. Connect a
1
F capacitor between C2+ and C2–.
SGND (Pin 34): Boost Switching Regulator Signal Ground.
Tie PGND to SGND.
FB (Pin 35): Boost Switching Regulator Feedback Pin.
Reference voltage is 1.255V. Connect resistive divider tap
here. Minimize trace area at FB.
SW (Pin 36): Boost Switching Regulator Switch Pin.
Connect inductor/diode here. Minimize trace area at this
pin to reduce EMI.
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