MIC2550A

Micrel, Inc.

M9999-031805

4

March 2005

Symbol

Parameter

Condition

Min

Typ

Max

Units

Transceiver DC Characteristics

I

LO

Hi-Z State Data Line Leakage

0V < V

–10

+10

µA

V

DI

Differential Input Sensitivity

|(D+) – (D–)|, V

0.2

V

V

CM

Differential Common-Mode Range

Includes V

0.8

2.5

V

V

SE

Single-Ended Receiver Threshold

0.8

2.0

V

Receiver Hysteresis, Note 6

200

mV

V

OL

Static Output Low, Note 5

OE# = 0, R

0.3

V

V

OH

Static Output High, Note 5

OE# = 0, R

2.8

3.6

V

V

CRS

Output Signal Crossover Voltage

1.3

2.0

V

Note 6

C

IN

Transceiver Capacitance, Note 6

Pin to GND

20

pF

Z

DRV

Driver Output Resistance

Steady state drive, Note 6

618

Ω

Low-Speed Driver Characteristics, Note 7

t

R

Transition Rise Time

C

75

ns

C

300

ns

t

F

Transition Fall Time

C

75

ns

C

300

ns

t

Rise and Fall Time Matching

T

80

125

%

V

CRS

Output Signal Crossover Voltage

1.3

2.0

V

Full-Speed Driver Characteristics, Note 7

t

R

Transition Rise Time

C

4

20

ns

t

F

Transition Fall Time

C

4

20

ns

t

Rise and Fall Time Matching

T

90

111.11

%

V

CRS

Output Signal Crossover Voltage

1.3

2.0

V

Transceiver Timing, Note 7

t

PVZ

OE# to RCVR Tri-state Delay

Figure 1

15

ns

t

PZD

Receiver Tri-state to Transmit Delay

Figure 1

15

ns

t

PDZ

OE# to DRVR Tri-state Delay

Figure 1

15

ns

t

PZV

Driver Tri-state to Receiver Delay

Figure 1

15

ns

t

PLH

V+/V– to D+/D– Propagation Delay

Figure 4

15

ns

t

PHL

V+/V– to D+/D– Propagation Delay

Figure 4

15

ns

t

PLH

D+/D– to RCV Propagation Delay

Figure 3

15

ns

t

PHL

D+/D– to RCV Propagation Delay

Figure 3

15

ns

t

PLH

D+/D– to V+/D– Propagation Delay

Figure 3

8

ns

t

PHL

D+/D– to V+/D– Propagation Delay

Figure 3

8

ns

Note 1.

Exceeding the absolute maximum rating may damage the device.

Note 2.

The device is not guaranteed to function outside its operating rating.

Note 3.

Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.

Note 4.

Applies to the VP, VM, RCV, OE#, SPD, and SUS pins.

Note 5.

Applies to D+, D–.

Note 6.

Not production tested. Guaranteed by design.

Note 7.

Characterized specification(s), but not production tested.