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Freescale Semiconductor Electronic Components Datasheet



MC33660

ISO K Line Serial Link Interface



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MC33660 pdf
Freescale Semiconductor
Advance Information
Document Number: MC33660
Rev 5.0, 10/2013
ISO K Line Serial Link Interface
The 33660 is a serial link bus interface device designed to provide
bi-directional half-duplex communication interfacing in automotive
diagnostic applications. It is designed to interface between the
vehicle’s on-board microcontroller, and systems off-board the vehicle
via the special ISO K line. The 33660 is designed to meet the
Diagnostic Systems ISO9141 specification. The device’s K line bus
driver’s output is fully protected against bus shorts and over-
temperature conditions.
The 33660 derives its robustness to temperature and voltage
extremes by being built on a SMARTMOS process, incorporating
CMOS logic, bipolar/MOS analog circuitry, and DMOS power FETs.
Although the 33660 was principally designed for automotive
applications, it is suited for other serial communication applications. It
is parametrically specified over an ambient temperature range of
-40 ºC TA 125 ºC and 8.0 V VBB 18 V supply. The economical
SO-8 surface-mount plastic package makes the 33660 very cost
effective.
Features
• Operates over wide supply voltage of 8.0 to 18 V
• Operating temperature of -40 to 125 °C
• Interfaces directly to standard CMOS microprocessors
• ISO K line pin protected against shorts to battery
• Thermal shutdown with hysteresis
• ISO K line pin capable of high currents
• ISO K line can be driven with up to 10 nF of parasitic capacitance
• 8.0 kV ESD protection attainable with few additional components
• Standby mode: no VBAT current drain with VDD at 5.0 V
• Low current drain during operation with VDD at 5.0 V
33660
ISO9141 PHYSICAL INTERFACE
EF SUFFIX (PB-FREE)
98ASB42564B
8-PIN SOICN
ORDERING INFORMATION
Device
(For tape and reel orders,
add an R2 suffix)
Temperature
Range (TA)
Package
MC33660EF
MC33660BEF
-40 to 125 °C
8-SOICN
+VBAT
VDD
VDD
33660
VDD
VBB
MCU
Dx
SCIRxD
SCITxD
CEN
RX
TX
ISO
GND
ISO K-LINE
Figure 1. 33660 Simplified Application Diagram
TXD
RXD
* This document contains certain information on a new product. Specifications and information herein are
subject to change without notice. © Freescale Semiconductor, Inc., 2011-2013. All rights reserved.
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DEVICE VARIATIONS
DEVICE VARIATIONS
Table 1. Device Variations
Parameter
VBB Load Dump Peak Voltage (in accordance with
ISO 7637-2 & ISO 7637-3)
Module Level ESD (Air Discharge, Powered) (6)
Notes
1. Recommended for all new designs
Symbol
VBB(5a)
VBB(5b)
VESD4
Condition
Pulse 5a
470 ohm series resistor
and 100 nF capacitor to
GND on VBB
Pulse 5b
470 ohm series resistor
and 100 nF capacitor to
GND on VBB
33 V zener diode and
470 pF capacitor to
GND on ISO
33660
45 V
33660B (1)
82 V
45 V
±25000 V
33660
2
Analog Integrated Circuit Device Data
Freescale Semiconductor
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Part Number MC33660
Description ISO K Line Serial Link Interface
Maker Freescale Semiconductor - Freescale Semiconductor
Total Page 14 Pages
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