33886_11 Datasheet, PDF (12/27 Pages) Freescale Semiconductor, Inc – TTL / CMOS Compatible Inputs PWM Frequencies up to 10 kHz

ELECTRICAL CHARACTERISTICS
TYPICAL SWITCHING WAVEFORMS
Table 5. Truth Table
The tri-state conditions and the fault status are reset using D1 or D2. The truth table uses the following notations: L = Low,
H = High, X = High or Low, and Z = High-impedance (all output power transistors are switched off).
Device State
Input Conditions
Fault Status
Flag
Output States
D1
D2
IN1
IN2
FS
OUT1
OUT2
Forward
L
H
H
L
H
H
L
Reverse
L
H
L
H
H
L
H
Freewheeling Low
L
H
L
L
H
L
L
Freewheeling High
L
H
H
H
H
H
H
Disable 1 (D1)
H
X
X
X
L
Z
Z
Disable 2 (D2)
X
L
X
X
L
Z
Z
IN1 Disconnected
L
H
Z
X
H
H
X
IN2 Disconnected
L
H
X
Z
H
X
H
D1 Disconnected
Z
X
X
X
L
Z
Z
D2 Disconnected
Undervoltage ⁽²⁷⁾
Overtemperature ⁽²⁸⁾
Short Circuit ⁽²⁸⁾
X
Z
X
X
L
Z
Z
X
X
X
X
L
Z
Z
X
X
X
X
L
Z
Z
X
X
X
X
L
Z
Z
Notes
27. In the case of an under-voltage condition, the outputs tri-state and the fault status is set logic Low. Upon under-voltage recovery, fault
status is reset automatically or automatically cleared and the outputs are restored to their original operating condition.
28. When a short-circuit or over-temperature condition is detected, the power outputs are tri-state latched-OFF independent of the input
signals and the fault status flag is set logic Low.
33886
12
Analog Integrated Circuit Device Data
Freescale Semiconductor