INTEGRATED CIRCUITS
74F5300
Fiber optic LED driver
Product specification |
1989 Dec 13 |
IC15 Data Handbook
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Philips Semiconductors FAST Products |
Prroduct specification |
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Fiber optic LED driver |
74F5300 |
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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
PIN CONFIGURATION
VCC |
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1 |
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8 |
VCC |
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ENABLE |
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2 |
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7 |
GND |
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INPUT |
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OUTPUT |
3 |
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6 |
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GND |
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4 |
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5 |
GND |
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SF01312
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 |
TYPICAL |
TYPICAL SUPPLY |
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PROPAGATION |
CURRENT( TOTAL) |
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DELAY |
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74F5300 |
2.5ns |
8mA |
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ORDERING INFORMATION
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ORDER CODE |
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DESCRIPTION |
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COMMERCIAL |
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DWG. PKG. # |
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RANGE |
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VCC = 5V ±10%, |
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Tamb = 0°C to +70°C |
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8±pin plastic DIP |
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N74F5300N |
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SOT97-1 |
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8±pin plastic SO |
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N74F5300D |
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SOT96-1 |
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INPUT AND OUTPUT LOADING |
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AND FAN OUT TABLE |
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PINS |
DESCRIPTION |
74F (U.L.) |
LOAD VALUE |
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HIGH/LOW |
HIGH/LOW |
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Input |
Data input |
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1.0/1.0 |
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20μA/0.6mA |
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Enable |
Enable input |
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1.0/1.0 |
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20μA/0.6mA |
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Output |
Current driver output |
8000/266.6 |
160mA/160m |
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NOTE: One (1.0) FAST unit load is defined as: 20μA in the high state and 0.6mA in the low state.
LOGIC DIAGRAM (ONE DRIVER)
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VCC |
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3 |
TTL |
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Output |
6 |
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INPUT |
Linearizing |
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input |
driver |
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circuit |
OUTPUT |
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buffer |
amp |
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2 |
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ENABLE |
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GND |
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VCC = Pin 1, 8 |
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GND = Pin 4, 5, 7 |
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SF01313 |
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DESCRIPTION |
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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 |
Philips Semiconductors FAST Products |
Prroduct specification |
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Fiber optic LED driver |
74F5300 |
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APPLICATION FOR 50Mb/s OPTICAL TRANSMITTER |
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+5V |
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0.1 μF |
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10 μF |
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+5V |
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1 |
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8 |
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120pF |
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10 μF |
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3 |
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90 Ω |
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INPUT |
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Output |
6 |
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TTL |
Linearizing |
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input |
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driver |
14 Ω |
4 Ω |
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circuit |
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buffer |
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amp |
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ENABLE |
2 |
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LED |
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4 |
5 |
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7 |
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SF01314
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free air temperature range.)
SYMBOL |
PARAMETER |
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RATING |
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UNIT |
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VCC |
Supply voltage |
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±0.5 to +7.0 |
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V |
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VIN |
Input voltage |
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±0.5 to +7.0 |
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V |
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IIN |
Input current |
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±30 to +5 |
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mA |
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VOUT |
Voltage applied to output in high output state |
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±0.5 to V |
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V |
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CC |
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IOUT |
Current applied to output in low output state |
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240 |
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mA |
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T |
Operating free air temperature range |
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0 to +70 |
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° |
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amb |
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Storage temperature range |
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±65 to +150 |
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° |
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stg |
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C |
RECOMMENDED OPERATING CONDITIONS |
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SYMBOL |
PARAMETER |
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LIMITS |
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° |
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TA = ±40 to +85 C |
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MIN |
NOM |
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MAX |
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UNIT |
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VCC |
Supply voltage |
4.5 |
5.0 |
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5.5 |
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V |
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VIH |
High±level input voltage |
2.0 |
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V |
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VIL |
Low±level input voltage |
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0.8 |
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V |
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IIk |
Input clamp current |
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±18 |
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mA |
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IOH |
High±level output current |
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±160 |
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mA |
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IOL |
Low±level output current |
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160 |
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mA |
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T |
Operating free air temperature range |
0 |
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+70 |
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° |
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amb |
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C |
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1989 Dec 13 |
3 |
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