FW802A-DB 参数 Datasheet PDF下载

FW802A Low-Power PHY

IEEE

1394A-2000

Two-Cable Transceiver/Arbiter Device

Data Sheet, Rev. 3

June 2001

Electrical Characteristics

(continued)

Table 4. Driver Characteristics

Parameter

Differential Output Voltage

Off-state Common-mode Voltage

Driver Differential Current,

TPA+, TPA−, TPB+, TPB−

Common-mode Speed Signaling

Current, TPB+, TPB−

Test Conditions

56

Ω

load

Drivers disabled

Driver enabled,

speed signaling off*

200 Mbits/s speed

signaling enabled

†

400 Mbits/s speed

signaling enabled

†

Symbol

V

OD

V

OFF

I

DIFF

I

SP

I

SP

Min

172

—

−1.05

−2.53

−8.1

Typ

—

—

—

—

—

Max

265

20

1.05

−4.84

−12.4

Unit

mV

mV

mA

mA

mA

* Limits are defined as the algebraic sum of TPA+ and TPA− driver currents. Limits also apply to TPB+ and TPB− as the algebraic sum of driver

currents.

† Limits are defined as the absolute limit of each of TPB+ and TPB− driver currents.

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Agere Systems Inc.