74F5300 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

74F5300

Fiber optic LED driver

Philips Electronics 

Philips Semiconductors FAST Products

Fiber optic LED driver

Prroduct specification

74F5300

FEATURES

• TTL inputs

• Output enable control

• High current source and sink capability

• Matched propagation delay times (tPLH, tPHL)

• Symmetrical rise and fall times

• ESD protection greater than 2000 volts

• Single +5V supply

• Surface mount package

APPLICATIONS

• High speed serial data communication

• Fiber optic data links

• Local area and metropolitan area networks

• Digital Television

• PBX systems

ASSOCIATED PRODUCTS

• NE5210/11/12 transimpedance amplifiers

• NE5214/5217 postamplifiers with link status indicator

• 74F5300 fiber optic LED driver

TYPE

74F5300

TYPICAL

PROPAGATION

DELAY

2.5ns

TYPICAL SUPPLY

CURRENT( TOTAL)

8mA

ORDERING INFORMATION

ORDER CODE

DESCRIPTION

8–pin plastic DIP

COMMERCIAL

RANGE

VCC = 5V ±10%,

Tamb = 0°C to +70°C

N74F5300N

8–pin plastic SO

N74F5300D

DWG. PKG. #

SOT97-1

SOT96-1

INPUT AND OUTPUT LOADING

AND FAN OUT TABLE

PINS

DESCRIPTION

74F (U.L.) LOAD VALUE

HIGH/LOW HIGH/LOW

Input Data input

1.0/1.0

20µA/0.6mA

Enable Enable input

1.0/1.0

20µA/0.6mA

Output Current driver output

8000/266.6 160mA/160m

NOTE: One (1.0) FAST unit load is defined as: 20µA in the high

state and 0.6mA in the low state.

PIN CONFIGURATION

VCC 1

ENABLE 2

INPUT 3

GND 4

8 VCC

7 GND

6 OUTPUT

5 GND

LOGIC DIAGRAM (ONE DRIVER)

VCC

SF01312

3

INPUT

TTL

input

buffer

2

ENABLE

VCC = Pin 1, 8

GND = Pin 4, 5, 7

Linearizing

circuit

Output

driver

amp

6

OUTPUT

GND

SF01313

DESCRIPTION

The 74F5300 is a LED driver designed for use in fiber optic links.

The 74F5300 is ideally suited for use in high speed optical high

transmitter systems.

The TTL input buffer accepts TTL data. A logic high on the enable

pin enables the buffer to drive the output driver amplifier. The

linearizing circuits ensures a constant propagation delay for tPLH

and tPHL, and controls the rise and fall times. The output driver

amplifier is capable of sourcing more than 160mA and sinking more

than 160mA at low impedances. The high current output driver has

been designed to deal with transmission line effects of high speed

switching systems with fast rising and falling edges. The

performance of the system can be enhanced by matching

impedance at the output for proper termination. It exhibits closely

matched propagation delays (tPLH and tPHL) and symmetrical rise

and fall times. The resulting optical waveform has minimal duty cycle

distortion (DCD). When used with the external pre–bias and

pre–charging circuits, the response can be tailored to a specific LED

to eliminate any overshoot and to minimize the long fall response.

Additionally, this part can be used as the transmitter in a complete

fiber optic system when combined with any of the

NE5210/5211/5212 preamplifiers and NE5214/5217 postamplifiers

for the optical receiver. Please refer to applications note AN1121 in

the Philips Semiconductors Fiber Optic Communication Data Book

for more specific applications information.

1989 Dec 13

2

853-1409 98304

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