MC145583DW 데이터 시트보기 (PDF) - LANSDALE Semiconductor Inc.

부품명

상세내역

제조사

MC145583DW

3.3 Volt Only Driver/Receiver with an Integrated Standby Mode RS 232/EIA–232–E and CCITT V.28

LANSDALE Semiconductor Inc. 

ML145583

LANSDALE Semiconductor, Inc.

ESD PROTECTION

ESD protection on IC devices that have their pins accessible

to the outside world is essential. High static voltages applied to

the pins when someone touches them either directly or indi-

rectly can cause damage to gate oxides and transistor junctions

by coupling a portion of the energy from the I/O pin to the

power supply buses of the IC. This coupling will usually occur

through the internal ESD protection diodes which are designed

to do just that. The key to protecting the IC is to shunt as much

of the energy to ground as possible before it enters the IC.

Figure 1 shows a technique which will clamp the ESD voltage

at approximately ± 15 V using the MMBZ15VDLT1. Any

residual voltage which appears on the supply pins is shunted to

ground through the capacitors C1and C2.

MMBZ15VDLT1 x 8

C5+

C2+

GND

VCC

C5–

C2–

RIMON

C1+

VSS

C1–

STB

VDD

Rx1

DO1

Rx2

DO2

Rx3

DO3

Tx1

DI1

Rx4

DO4

Tx2

DI2

Rx5

DO5

Tx3

DI3

Figure 1. ESD Protection Scheme

0.1 µF C1

0.1 µF

C2

Page 6 of 7

www.lansdale.com

Issue A

Share Link: