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(SDT8018-T_-Q_)

Specification : TS-S97D010E

Nov, 1999

4. Pin Assignment

3. Package Dimension

Caution

Do not disassemble this product. Otherwise, failure, electrical shock, overheating or fire may occur.

Handle the lead pins carefully. Use assisting tools or prospective aids as required. A lead pin may injure skin or human body

Pin

Symbol

I/O

Level

Description

1

Vcc

+5V

Positive power supply (+5V)

2

Vcc

+5V

3

RFM(+)

O

Analog

Rear facet PD current monitor voltage (positive)

4

RFM(-)

O

Analog

Rear facet PD current monitor voltage (negative)

5

TDb

I

PECL

Differential data input (negative)

6

VTTD

Vcc-2V

Data input signal termination, Vcc-2V supply for DC PECL interface.

(AC GND)

Or pull down to GND via a capacitor for AC coupled interface.

7

TD

I

PECL

Differential data input (positive)

8

NC

No user connection

9

Vcc

+5V

Positive power supply (+5V)

10

Vcc

+5V

Positive power supply (+5V)

11

Vee

GND

Negative power supply (GND)

12

Vee

GND

Negative power supply (GND)

13

Vee

GND

Negative power supply (GND)

14

Vee

GND

Negative power supply (GND)

15

ALM

O

TTL

LD bias current alarm, normal low, active high

16

Disable

I

TTL

Transmitter disable input. Default (open) LOW and transmitter is enabled.

17

Selector

I

Signal input mode selector, clocked or non-clocked.

Default (open) LOW and clocked mode.

18

TCLK

I

PECL

Differential clock input (positive)

19

VTTC

Vcc-2V

Clock input signal termination, Vcc-2V supply for DC PECL interface.

(AC GND)

Or pull down to GND via a capacitor for AC coupled interface

20

TCLKb

I

PECL

Differential clock input (negative)

21

BM(-)

O

Analog

LD bias current monitor voltage (negative)

22

BM(+)

O

Analog

LD bias current monitor voltage (positive)

23

Vcc

+5V

Positive power supply (+5V)

24

Vcc

+5V

Positive power supply (+5V)

NC pins should left open for additional functions in the future

PIN13

PIN24

PIN1

PIN12

t=0.25

1.5

0.5

UNIT:mm

36.4

23.5

2.54PX11=27.94

14.4

600+/-50

4.2

Figure 2. Package Dimension

+0.2

-0.1

+0.1

-0.1

+0.5

-0.5

+0.1

-0.1

+0.3

-0.05

+0.2

-0.1

+0.1

-0.05

pin dimension