ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics (continued)
Characteristics noted under conditions 5.5V ≤ VSUP ≤ 18V, -40°C ≤ TA ≤ 125°C for the 33912 and -40°C ≤ TA ≤ 85°C for the
34912, unless otherwise noted. Typical values noted reflect the approximate parameter mean at TA = 25°C under nominal
conditions, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
V/µs
µs
LIN PHYSICAL LAYER: DRIVER CHARACTERISTICS FOR FAST SLEW RATE
LIN Fast Slew Rate (Programming Mode)
SR
—
20
—
FAST
LIN PHYSICAL LAYER: CHARACTERISTICS AND WAKE-UP TIMINGS(49)
Propagation Delay and Symmetry(50)
tREC_PD
Propagation Delay Receiver, tREC_PD=MAX (tREC_PDR, tREC_PDF
Symmetry of Receiver Propagation Delay tREC_PDF - tREC_PDR
)
—
3.0
—
6.0
2.0
tREC_SYM
-2.0
Bus Wake-Up Deglitcher (Sleep and Stop Modes)(51)
tPROPWL
42
70
95
µs
µs
Bus Wake-Up Event Reported
From Sleep Mode(52)
tWAKE
tWAKE
—
—
1500
17
From Stop Mode(53)
9.0
13
TXD Permanent Dominant State Delay
tTXDDOM
0.65
1.0
1.35
s
PULSE WIDTH MODULATION INPUT PIN (PWMIN)
PWMIN pin(54)
fPWMIN
kHz
Max. frequency to drive HS and LS output pins
10
Notes
49. VSUP from 7.0V to 18V, bus load RBUS and CBUS 1.0nF / 1.0kΩ, 6.8nF / 660Ω, 10nF / 500Ω. Measurement thresholds: 50% of TXD
signal to LIN signal threshold defined at each parameter. See Figure 6, page 18.
50. See Figure 9, page 19
51. See Figure 10, page 19 for Sleep and Figure 11, page 19 for Stop Mode.
52. The measurement is done with 1µF capacitor and 0mA current load on VDD. The value takes into account the delay to charge the
capacitor. The delay is measured between the bus wake-up threshold (VBUSWU) rising edge of the LIN bus and when V reaches 3.0V.
DD
See Figure 10, page 19. The delay depends of the load and capacitor on VDD
.
53. In Stop Mode, the delay is measured between the bus wake-up threshold (VBUSWU) and the falling edge of the IRQ pin. See Figure 11,
page 19.
54. This parameter is guaranteed by process monitoring but not production tested.
33912
Analog Integrated Circuit Device Data
Freescale Semiconductor
16
FREESCALE [ Freescale ]
