HDMP-1512 Просмотр технического описания (PDF) - HP => Agilent Technologies

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HDMP-1512

Fibre Channel Transmitter and Receiver Chipset

HP => Agilent Technologies 

Rx Power Supply

Supervisor

A power supply supervisor feature

has been designed into the

receiver as a system aid during

power-up. The -POR (pin # 27)

output is held low until the power

supply voltage (VCC) crosses the

nominal threshold of 4.25 volts.

Then, following a delay time

determined by the capacitor value

connected to the PS_CT pin

(# 22), the -POR output goes high.

The typical delay time is 8 msec,

with a 0.47 µF capacitor attached

to PS_CT.

90

80

70

60

50

DEFAULT

40 THRESHOLD

30

20

10

0

0

0.5 1.0 1.5 2.0 2.5

DR_REF VOLTAGE – V

Figure 8. Typical Plot of Loss of Light

Threshold Voltage vs. DR_REF

Voltage.

Recommended Handling

Precautions

Additional circuitry is built into the

various input and output pins on

these chips to protect them against

low level electrostatic discharge,

however, they are still ESD

sensitive and standard procedures

for static sensitive devices should

be used in the handling and

assembly of the HDMP-1512 and

the HDMP-1514. The packing

materials used for shipment of

these devices was selected to

provide ESD protection and to

prevent mechanical damage.

During test and use, under power-

up conditions, extreme care should

be taken to prevent the high speed

I/Os from being connected to

ground as permanent damage to

the device is likely.

HDMP-1512 (Tx), HDMP-1514 (Rx)

Absolute Maximum Ratings

Operation in excess of any one of these conditions may result in permanent damage.

Symbol

VCC

VIN,TTL

VIN,H50

IO,TTL

Tstg

TJ

Tmax

Parameter

Supply Voltage

TTL Input Voltage

I-H50 Input Voltage, Figure 9

TTL Output Source Current

Storage Temperature

Junction Operating Temperature

Maximum Assembly Temperature (for 10 seconds

maximum)

Units

V

V

V

mA

°C

°C

°C

Min.

-0.5

-0.7

VCC - 2.0

-40

0

0

Max.

6.0

VCC + 0.7

VCC + 0.7

13

+130

+130

+260

HDMP-1512 (Tx), HDMP-1514 (Rx)

Specified Operating Rates

TC = 0°C to +85°C, VCC = 4.5 V to 5.5 V

Transmit Byte Clock (TBC)

(MHz)

SPDSEL

Min.

Max.

0

52.0

54.0

1

52.0

54.0

Serial Baud Rate

(MBaud/sec)

Min.

Max.

520

540

1040

1080

663

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