Analog Integrated Circuit Device Data

10

Freescale Semiconductor

33781

ELECTRICAL CHARACTERISTICS

DYNAMIC ELECTRICAL CHARACTERISTICS

BUS TRANSMITTER

Idle-to-Signal and Signal-to-Idle Slew Rate(13)

3.0

6.0

8.0

V/

μs

Signal High-to-Low and Signal Low-to-High Slew

Rate(13),(14) (See Data Valid DSIS to DnD Timing)

3.0

6.0

8.0

V/

μs

Communication Data Rate Capability(14) (Ensured by

Transmitter Data

Valid and Receiver Delay Measurements)

Data Rate(before frequency spreading)

77.1

–

200

kbps

(14)

The Max value depends on the settings in the FSEL bits

5.0

–

–

μs

DBUS Start Delay, CS0 Rising Edge to DBUS(14)

note: DLY is the inter-message delay selected in the

DnCTRL register

–

μs

Data Valid(13)

–

–

–

–

–

–

–

–

5.3

1.0

1.0

1.0

μs

Signal mode Over-current Shutdown Delay(14)

3.0

5.0

7.0

μs

Signal Low Time for Logic Zero

33.3% Duty Cycle

2/3 *

μs

Signal Low Time for Logic One

66.7% Duty Cycle

1/3 *

μs

Notes

13.

C = 2.8nF from DnH to DnL and 2.2nF from DnH and DnL to GND, capacitor tolerance = ±10%.

14.

Not measured in production.

Table 4. Dynamic Electrical Characteristics (continued)

Characteristics noted under conditions 4.75V

noted. Voltages relative to GND, unless otherwise noted. Typical values noted reflect the approximate mean values of the

Characteristic

Symbol

Min

Typ

Max

Unit