LT1537 datasheet(2/8 Pages) LINER

Part #	LT1537

Description	Advanced Low Power 5V RS232 Transceiver with Small Capacitors

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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2

LT1537

(Note 1)

A

G

A

U

A

R

BSOLUTEXI

TI

S

PACKAGE/ORDER I FOR ATIO

ORDER PART

NUMBER

Supply Voltage (VCC) ............................................. 5.5V

V+ ........................................................................ 13.2V

V– (Note 7) .......................................................... – 6.5V

Input Voltage

Driver ........................................................... V– to V +

Receiver ............................................... – 25V to 25V

Output Voltage

Driver ....................................... V + – 25V to V– + 25V

Receiver .................................... – 0.3V to VCC + 0.3V

Short Circuit Duration

V+ ................................................................... 30 sec

V– ................................................................... 30 sec

Driver Output .............................................. Indefinite

Receiver Output .......................................... Indefinite

Operating Temperature Range

LT1537C ................................................. 0

°C to 70°C

Storage Temperature Range ................ – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec)................. 300

°C

Consult factory for Industrial and Military grade parts.

LT1537CG

LT1537CSW

ELECTRICAL C

C

HARA TERISTICS (Note 2)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply Generator

V+ Output

8.6

V

V– Output

– 7.0

V

Supply Current (VCC)

(Note 3)

q

817

mA

Supply Current When OFF (VCC)

Shutdown (Note 4)

q

1.0

10

µA

DRIVER DISABLE

1.5

mA

Shutdown to Turn-On

C+, C – = 0.1

µF, C1, C2 = 0.2µF

0.2

ms

ON/OFF Pin Thresholds

Input LOW Level (Device Shutdown)

q

1.4

0.8

V

Input HIGH Level (Device Enabled)

q

2.4

1.4

V

ON/OFF Pin Current

0V

≤ VON/OFF ≤ 5V

q

–15

80

µA

Driver Disable Pin Thresholds

Input LOW Level (Drivers Enabled)

q

1.4

0.8

V

Input HIGH Level (Drivers Disabled)

q

2.4

1.4

V

Driver Disable Pin Current

0V

≤ VDRIVER DISABLE ≤ 5V

q

–10

500

µA

Oscillator Frequency

130

kHz

Any Driver

Output Voltage Swing

Load = 3k to GND

Positive

q

5.0

7.5

V

Negative

q

– 6.3

– 5.0

V

Logic Input Voltage Level

Input LOW Level (VOUT = HIGH)

q

1.4

0.8

V

Input HIGH Level (VOUT = LOW)

q

2

1.4

Logic Input Current

0.8V

≤ VIN ≤ 2V

q

520

µA

Output Short-Circuit Current

VOUT = 0V

±17

mA

1

2

3

4

5

6

7

8

9

10

11

12

13

14

V+

5V VCC

C1+

C1–

DRIVER OUT

RX IN

DRIVER OUT

RX IN

DRIVER OUT

RX IN

ON/OFF

NC

28

27

26

25

24

23

22

21

20

19

18

17

16

15

V –

C2–

C2+

DRIVER IN

RX OUT

DRIVER IN

RX OUT

DRIVER IN

RX OUT

GND

NC

TOP VIEW

SW PACKAGE

28-LEAD PLASTIC SO WIDE

G PACKAGE

28-LEAD PLASTIC SSOP

DRIVER

DISABLE

TJMAX = 150°C, θJA = 96°C/ W (G)

TJMAX = 150°C, θJA = 85°C/ W (SW)

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