LTC1318CSW datasheet(6/8 Pages) LINER

tên linh kiện	LTC1318CSW

Giải thích chi tiết về linh kiện	Single 5V RS232/RS422/AppleTalk DCE Transceiver

PDF	8 Pages

Scroll/Zoom	100%

nhà sản xuất	LINER [Linear Technology]

Trang chủ	http://www.linear.com

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6 / 8 page

LTC1318

PIN FUNCTIONS

C2+, C2– (Pins 22, 23): C2 inputs. Connect a 0.1

µFcapacitor

between C2+ and C2–.

V– (Pin 24): Charge Pump Negative Output. This pin

requires a 0.1

µFcapacitortoground.Undernormalopera-

tion, this pin maintains a voltage of about 8.6V below

ground. An external load can be connected between this

pin and ground or V+.

1318 F01

VOD

VOC

–

TXD

TXD+

TXD–

RL/2

Figure 1.

Figure 2.

1318 F02

TXD

TXD+

RXD+

RXD0/RXD2

RXD–/

RXI2

TXD–

TEST CIRCUITS

Figure 4. Differential Receiver

V OD2

(RXD+) – (RXD–)

RXDO

VOL

VOH

LT1318 • F04

tPLH

tPHL

–VOD2

1.5V

f = 1MHz: tr ≤ 10ns: tf ≤ 10ns

1.5V

TXD

f = 1MHz: tr ≤ 10ns: tf ≤ 10ns

1.5V

–VO

tSKEW

1/2 VO

LT1318 • F03

tPLH

90%

50%

10%

tPHL

90%

50%

10%

tSKEW

VDIFF = V(TXD

+) – V(TXD–)

TXD–

TXD+

Figure 3. Differential Driver

SWITCHING WAVEFORM S

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