12

LTC1686/LTC1687

© LINEAR TECHNOLOGY CORPORATION 1997

16867f LT/TP 1197 4K • PRINTED IN THE USA

Linear Technology Corporation

substantial parasitic capacitance. Parasitic capacitances

on the receiver/driver outputs can also unduly slow down

both the propagation delay and the rise/fall times.

The receiver inputs are high bandwidth and high imped-

ance. If they are left floating, any capacitive coupling from

any other signal can cause a glitch at the receiver output.

Thus, if the receiver is not being used, it is advisable to

always ground at least one of the two receiver input pins.

S8 Package

8-Lead Plastic Small Outline (Narrow 0.150)

(LTC DWG # 05-08-1610)

PART NUMBER

DESCRIPTION

COMMENTS

LTC490

Low Power RS485 Full-Duplex Transceiver

LTC491

Low Power RS485 Full-Duplex Transceiver

LTC1518

High Speed Quad RS485 Receiver

52Mbps, Pin Compatible with LTC488

LTC1519

High Speed Quad RS485 Receiver

52Mbps, Pin Compatible with LTC489

LTC1520

High Speed Quad Differential Receiver

52Mbps,

±100mV Threshold, Rail-to-Rail Common Mode

LTC1685

High Speed RS485 Transceiver

52Mbps, Pin Compatible with LTC485

RELATED PARTS

SO8 0996

0.016 – 0.050

0.406 – 1.270

0.010 – 0.020

(0.254 – 0.508)

× 45°

0

°– 8° TYP

0.008 – 0.010

(0.203 – 0.254)

0.053 – 0.069

(1.346 – 1.752)

0.014 – 0.019

(0.355 – 0.483)

0.004 – 0.010

(0.101 – 0.254)

0.050

(1.270)

TYP

1

2

3

4

0.150 – 0.157**

(3.810 – 3.988)

8

7

6

5

0.189 – 0.197*

(4.801 – 5.004)

0.228 – 0.244

(5.791 – 6.197)

DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH

SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD

FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

*

**

S Package

14-Lead Plastic Small Outline (Narrow 0.150)

(LTC DWG # 05-08-1610)

S14 0695

1

2

3

4

0.150 – 0.157**

(3.810 – 3.988)

14

13

0.337 – 0.344*

(8.560 – 8.738)

0.228 – 0.244

(5.791 – 6.197)

12

11

10

9

5

6

7

8

0.016 – 0.050

0.406 – 1.270

0.010 – 0.020

(0.254 – 0.508)

× 45°

0

° – 8° TYP

0.008 – 0.010

(0.203 – 0.254)

0.053 – 0.069

(1.346 – 1.752)

0.014 – 0.019

(0.355 – 0.483)

0.004 – 0.010

(0.101 – 0.254)

0.050

(1.270)

TYP

DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

*

**