Freescale Semiconductor
Technical Data
Document Number: MC33290
Rev 8.0, 8/2008
ISO K Line Serial Link Interface
The 33290 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 33290 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
overtemperature conditions.
The 33290 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 33290 was principally designed for automotive
applications, it is suited for other serial communication applications.
It is parametrically specified over an ambient temperature range of
-40ºC
≤
T
A
≤
125ºC and 8.0 V
≤
V
BB
≤
18 V supply. The economical
SO-8 surface-mount plastic package makes the 33290 very cost
effective.
Features
•
•
•
•
•
•
•
•
•
•
•
33290
ISO9141 PHYSICAL INTERFACE
D SUFFIX
EF SUFFIX (PB-FREE)
98ASB42564B
8-PIN SOICN
ORDERING INFORMATION
Temperature
Range (T
A
)
-40 to 125°C
Package
Device
Operates Over Wide Supply Voltage of 8.0 to 18V
Operating Temperature of -40 to 125°C
MC33290D/R2
Interfaces Directly to Standard CMOS Microprocessors
MCZ33290EF/R2
ISO K Line Pin Protected Against Shorts to Ground
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 V
Bat
Current Drain with V
DD
at 5.0 V
Low Current Drain During Operation with V
DD
at 5.0 V
Pb-Free Packaging Designated by Suffix Code EF
8-SOICN
+VBAT
VDD
33290
VDD
MCU
Dx
SCIR D
x
SCITx D
CEN
RX
TX
ISO
GND
VDD
VBB
ISO K-Line
T xD
R xD
Figure 1. 33290 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as
may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2006-2008. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
