DP83910AN National Semiconductor, DP83910AN Datasheet

IC SERIAL NETWRK INT CMOS 24-DIP

DP83910AN

Manufacturer Part Number
DP83910AN
Description
IC SERIAL NETWRK INT CMOS 24-DIP
Manufacturer
National Semiconductor
Datasheet

Specifications of DP83910AN

Applications
Ethernet Network
Interface
Serial
Voltage - Supply
4.75 V ~ 5.25 V
Package / Case
24-DIP (0.300", 7.62mm)
Mounting Type
Through Hole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*DP83910AN

Available stocks

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Part Number
Manufacturer
Quantity
Price
Part Number:
DP83910AN
Manufacturer:
NS
Quantity:
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Manufacturer:
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Quantity:
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C 1995 National Semiconductor Corporation
DP83910A CMOS SNI
Serial Network Interface
General Description
The DP83910A CMOS Serial Network Interface (SNI) is a
direct-pin equivalent of the bipolar DP8391 SNI and pro-
vides the Manchester data encoding and decoding func-
tions for IEEE 802 3 Ethernet Thin-Ethernet type local area
networks The SNI interfaces the DP8390 Network Interface
Controller (NIC) to the DP8392 CTI or an Ethernet transceiv-
er cable When transmitting the SNI converts non-return-to-
zero (NRZ) data from the controller into Manchester data
and sends the converted data differentially to the transceiv-
er Conversely when receiving a Phase Lock Loop de-
codes the 10 Mbit s data from the transceiver into NRZ
data for the controller
The DP83910A operates in conjunction with the DP8392
Coaxial Transceiver Interface (CTI) and the DP8390 Net-
work Interface Controller (NIC) to form a three-chip set that
implements a complete IEEE 802 3 compatible network as
shown below The DP83910A is a functionally complete
Manchester encoder decoder including a balanced driver
and receiver on-board crystal oscillator collision signal
translator
1 0 System Diagram
TRI-STATE is a registered trademark of National Semiconductor Corporation
and a diagnostic loopback feature
TL F 9365
IEEE 802 3 Compatible Ethernet Thin-Ethernet 10 BaseT
Local Area Network Chip Set
The
DP83910A fabricated CMOS typically consumes less than
70 mA of current However as a result of being CMOS the
DP83910A’s differential signals must be isolated in both
Ethernet and thin wire Ethernet
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Compatible with Ethernet I IEEE 802 3 10BASE5
10BASE2 and 10BASE-T
Designed to interface with 10BASE-T transceivers
Functional and pin-out duplicate of the DP8391
10 Mbits s Manchester encoding decoding with receive
clock recovery
Requires no precision components
Loopback capability for diagnostics
Externally selectable half or full step modes of opera-
tion at transmit output
Squelch circuitry at the receive and collision inputs to
reject noise
TTL MOS compatible controller interface
RRD-B30M105 Printed in U S A
TL F 9365 – 1
May 1995

Related parts for DP83910AN

DP83910AN Summary of contents

Page 1

... System Diagram IEEE 802 3 Compatible Ethernet Thin-Ethernet 10 BaseT TRI-STATE is a registered trademark of National Semiconductor Corporation C 1995 National Semiconductor Corporation TL F 9365 DP83910A fabricated CMOS typically consumes less than current However as a result of being CMOS the DP83910A’ ...

Page 2

Block Diagram 3 0 Functional Description The DP83910A consists of five main logical blocks a) The oscillator generates the 10 MHz transmit clock signal for system timing b) The Manchester encoder accepts NRZ data from the controller encodes ...

Page 3

... This feature provides a convenient method for testing both chip and system level integrity The transmit driver and receive input circuitry are disabled in loopback mode TL F 9365 – 9365 – 17 Order Number DP83910AN See NS Package Number N24C 3 resistors connected in series if the 175 mV b ...

Page 4

Typical Application 4 ...

Page 5

Pin Descriptions 24-Pin DIP 28-Pin PCC Name 1 1 COL 2 2 RXD 3 3 CRS 4 4 RXC 5 5 SEL LBK ...

Page 6

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage ( Input Voltage ( Output Voltage ( OUT Differential Input Voltage Differential Output Voltage Power Dissipation Storage Temperature Specifications Symbol ...

Page 7

Switching Characteristics Oscillator Specification Symbol Parameter Transmit Clock High XTH Transmit Clock Low XTL Transmit Specifications (Start of Packet) Symbol Parameter t Transmit Clock High Time (Note 1) TCh t Transmit Clock ...

Page 8

Switching Characteristics Transmit Specifications (End of Packet) Symbol Parameter t Transmit Enable Hold Time from Rising Edge of TXC TXEh t Transmit Output High before Idle (Half Step) TOh t Transmit Output Idle Time (Half Step) TOi Receiver ...

Page 9

Switching Characteristics Receiver Specifications (End of Packet) Symbol Parameter t Carrier Sense Turn Off Delay (Note 1) CRSoff t Minimum Number of RXCs after CRS Low (Note 2) RXCh Note 1 When CRS goes low it will go ...

Page 10

Switching Characteristics Loopback Specifications Symbol Parameter t Loopback Setup Time (Note 1) LBs t Loopback Hold Time (Note 1) LBh Note 1 This parameter is guaranteed by design and is not tested AC Timing Test Conditions All specifications ...

Page 11

... Physical Dimensions inches (millimeters) Molded Dual-In-Line Package (N) Order Number DP83910AN NS Package Number N24C 11 ...

Page 12

... Hong Kong Ltd 49) 0-180-530 85 86 13th Floor Straight Block a Ocean Centre 5 Canton Rd 49) 0-180-530 85 85 Tsimshatsui Kowloon a Tel ( 49) 0-180-532 78 32 Hong Kong a 49) 0-180-532 93 58 Tel (852) 2737-1600 a Tel ( 49) 0-180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 ...

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