PCA82C252-T [NXP]
IC DATACOM, INTERFACE CIRCUIT, PDSO14, 3.90 MM, PLASTIC, MS-012AB, SOT-108-1, SOP-14, Network Interface;
| 型号： | PCA82C252-T |
| 厂家： | 
NXP |
| 描述： | IC DATACOM, INTERFACE CIRCUIT, PDSO14, 3.90 MM, PLASTIC, MS-012AB, SOT-108-1, SOP-14, Network Interface 电信 光电二极管 电信集成电路 |
| 文件： | 总20页 (文件大小：93K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
PCA82C252
Fault-tolerant CAN transceiver
1997 Oct 28
Product specification
Supersedes data of 1997 Mar 07
File under Integrated Circuits, IC18
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
• Thermally protected
FEATURES
• Bus lines protected against transients in an automotive
environment
Optimized for in-car low-speed communication
• Baud rate up to 125 kBaud
• An unpowered node does not disturb the bus lines.
• Up to 15 nodes can be connected
• Supports unshielded bus wires
• Low RFI due to built-in slope control function
• Fully integrated receiver filters.
Support for low-power modes
• Low current sleep/standby mode with wake-up via the
bus lines
• Power-on reset flag on the output.
Bus failure management
• Supports one-wire transmission modes with ground
GENERAL DESCRIPTION
offset voltages up to 1.5 V
The PCA82C252 is the interface between the CAN
protocol controller and the physical bus. It is primarily
intended for low-speed applications, up to 125 kBaud, in
passenger cars. The device provides differential transmit
capability but will switch in error conditions to a single-wire
transmitter and/or receiver.
• Automatic switching to single-wire mode in the event of
bus failure
• Automatic reset to differential mode if bus failure is
removed.
Protection
• Short-circuit proof to battery and ground in 12 V
powered systems
QUICK REFERENCE DATA
SYMBOL
VCC
VBAT
PARAMETER
supply voltage
CONDITIONS
MIN.
4.75
TYP.
MIN.
5.25
UNIT
−
−
−
−
V
battery voltage
no time limit
−0.3
6.0
−
+27
27
V
operating
V
load dump
40
V
Isleep
sleep mode current
VCC = 0 V; VBAT = 12 V
−
50
−
µA
V
VCANH,VCANL CANH, CANL input voltage
VCC = 0 to 5.5 V; VBAT ≥ 0 V;
−10
−
+27
no time limit
V
CC = 0 to 5.5 V; VBAT ≥ 0 V;
t < 0.1 ms; load dump
CANH transmitter drop voltage ICANH = 40 mA
CANL transmitter drop voltage ICANL = 40 mA
−40
−
+40
V
VDROP(H)
−
−
1.4
1.4
−
V
VDROP(L)
−
−
V
tPD
tf
propagation delay
TXD to RXD
90% to 10%
10% to 90%
−
1
µs
µs
µs
°C
bus output fall time
−
0.5
0.5
−
−
tr
bus output rise time
−
−
Tamb
operating ambient temperature
−40
+125
ORDERING INFORMATION
TYPE
PACKAGE
DESCRIPTION
NUMBER
NAME
VERSION
PCA82C252T
1997 Oct 28
SO14
plastic small outline package; 14 leads; body width 3.9 mm
2
SOT108-1
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
BLOCK DIAGRAM
V
BAT
14
CC
10
16
kΩ
1
INH
TEMPERATURE
PROTECTION
7
5
6
WAKE-UP
STANDBY
CONTROL
WAKE
STB
EN
9
RTL
11
CANH
V
12
CC
CANL
8
RTH
DRIVER
2
4
TXD
PCA82C252
FAILURE DETECTOR
PLUS WAKE UP
PLUS TIME-OUT
NERR
FILTER
FILTER
RECEIVER
3
RXD
13
GND
MBH548
Fig.1 Block diagram.
1997 Oct 28
3
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
PINNING
SYMBOL
PIN
DESCRIPTION
inhibit output for switching external 5 V regulator
INH
1
2
TXD
RXD
NERR
STB
transmit data input, when LOW bus data will be dominant, when HIGH bus data will be recessive
receive data output, when LOW bus data will be dominant
error output pin, when LOW a bus error exists
3
4
5
not standby digital control input signal (active LOW)
enable digital control input signal
EN
6
WAKE
RTH
RTL
7
not wake input signal, when pulled down INH becomes active for wake-up (active LOW)
termination resistor, CANH line will be high-impedance with certain bus errors
termination resistor, CANL line will be high-impedance with certain bus errors
supply voltage (+5 V)
8
9
VCC
10
11
12
13
14
CANH
CANL
GND
BAT
high voltage bus line, will be HIGH in dominant state
low voltage bus line, will be LOW in dominant state
ground
battery voltage
handbook, halfpage
INH
1
2
3
4
5
6
7
14 BAT
13
TXD
RXD
GND
12 CANL
11
PCA82C252
NERR
STB
CANH
10
9
V
CC
EN
RTL
RTH
WAKE
8
MBG621
Fig.2 Pin configuration.
1997 Oct 28
4
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
Failures 4 and 7 initially result in a permanent dominant
level at RXD. After a time-out, the CANL driver and the
RTL pin are switched off. Only a weak pull-up at RTL
remains. Reception continues by switching to the
single-wire mode via CANH. When failures 4 or 7 are
removed, the recessive bus levels are restored. If the
differential voltage remains below the recessive threshold
level for a certain period of time, reception and
FUNCTIONAL DESCRIPTION
The PCA82C252 is the interface between the CAN
protocol controller and the physical bus. It is primarily
intended for low speed applications, up to 125 kbaud, in
passenger cars. The device provides differential transmit
capability to the bus and differential receive capability to
the CAN controller.
transmission switch back to the differential mode.
To reduce RF interference the rise and fall slope are
limited. This allows the use of an unshielded twisted pair or
a parallel pair of wires for the bus. Moreover, it supports
transmission capability on either bus wire if one of the bus
wires is corrupted. The failure detection logic automatically
selects a suitable transmission mode.
If any of the seven wiring failures occur, the output NERR
will be made LOW. On error recovery, NERR will be made
HIGH again.
During all single-wire transmissions, the EMC
performance (both immunity and emission) is worse than
in the differential mode. Integrated receiver filters
suppress any HF noise induced into the bus wires.
The cut-off frequency of these filters is a compromise
between propagation delay and HF suppression. In the
single-wire mode, low frequency noise cannot be
distinguished from the required signal.
In normal operation (no wiring failures) the differential
receiver is output to RXD. The differential receiver inputs
are connected to CANH and CANL through integrated
filters. The filtered input signals are also used for the single
wire receivers. The CANH and CANL receivers have
threshold voltages that ensure a maximum noise margin in
single-wire modes.
Low power modes
Failure detector
The transceiver provides 3 low power modes which can be
entered and exited via pins STB and EN.
The failure detector is active in the normal operation mode
and detects the following single bus failures and switches
to an appropriate mode:
The sleep mode is the mode with the lowest power
consumption. The INH pin is switched to high-impedance
for deactivation of external voltage regulators. CANL is
biased to the battery voltage via the RTL output. If the
supply voltage is provided the RXD and NERR will signal
the wake-up interrupt
1. CANH wire interrupted
2. CANL wire interrupted
3. CANH short-circuited to battery
4. CANL short-circuited to ground
5. CANH short-circuited to ground
6. CANL short-circuited to battery
7. CANL mutually shorted to CANH.
The VBAT standby mode will react the same as the sleep
mode with an active INH output.
The VCC standby mode is the VBAT standby with RTL
switched to the VCC voltage. In this mode the NERR output
signals the VBAT power-on flag and the RXD output will
show the wake-up interrupt.
The differential receiver threshold is set at −2.9 V.
This ensures correct reception in the normal operating
modes and, in the event of failures 1, 2 and 5 with a noise
margin as high as possible. These failures, or recovery
from them, do not destroy ongoing transmissions.
To ensure speed requirements the differential receiver has
an acceleration function.
Wake-up requests are recognized by the transceiver when
a dominant signal is detected on either bus line or if the
WAKE pin is connected to ground. On a wake-up request
the transceiver will set the INH output which can be used
to activate the external VCC voltage regulator. If VCC is
provided the wake-up request can be read on the NERR or
RXD outputs, on which the external microcontroller can
wake up the transceiver (switch to normal operating mode)
via STB and EN.
Failures 3 and 6 are detected by comparators connected
to CANH and CANL, respectively. If the comparator
threshold is exceeded for a certain period of time, the
reception is switched to the single-wire mode. This time is
needed to avoid false triggering by external RF fields.
Recovery from these failures is detected automatically
after a certain time-out (filtering) and no transmission is
lost.
1997 Oct 28
5
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
To prevent false wake-up due to transients or RF fields,
wake-up voltage threshold levels have to be maintained
for a certain period of time. In the low power modes the
failure detection circuit remains partly active to prevent
increased power consumption should errors 3, 4 and 7
occur.
Protections
A current limiting circuit protects the transmitter output
stages against short-circuit to positive and negative
battery voltage.
If the junction temperature exceeds a maximum value, the
transmitter output stages are disabled. Because the
transmitter is responsible for the major part of the power
dissipation, this will result in a reduced power dissipation
and hence a lower chip temperature. All other parts of the
IC will remain operating.
Power on
After power-on VBAT is switched on, the INH pin will
become HIGH and an internal power-on flag will be set.
This flag can be read via the NERR pin (STB = 1, EN = 0)
and will be reset by entering the normal operation mode.
The CANH and CANL inputs are protected against
electrical transients which may occur in an automotive
environment.
The EN and STB pins will internally be set to LOW level, if
the VCC voltage is below a certain threshold level, to
provide fail safe functionality.
Table 1 Truth table of CAN transceiver
STB EN
MODE
INH
NERR
RXD
RTL
0
0
0
1
0
0
1
0
V
BAT standby(1)
HIGH LOW active wake-up interrupt signal if VCC is present switched to VBAT
sleep(2)
go to sleep command floating
VCC standby(3)
HIGH LOW active VBAT
power-on flag
normal operation mode HIGH LOW active error flag
floating
switched to VBAT
switched to VBAT
switched to VCC
LOW active wake-up
interrupt
1
1
HIGH = receive;
LOW = dominant
received data
switched to VCC
Notes
1. Wake-up interrupts are released when entering normal operating mode.
2. If go to sleep command was used before (EN may turn LOW as VCC drops, without affecting internal functions
because of fail safe functionality).
3. VBAT power-on flag will be reset when entering normal operation mode.
1997 Oct 28
6
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
VCC
PARAMETER
CONDITIONS
MIN.
−0.3
MAX.
+6.0
UNIT
supply voltage
V
V
V
V
VDD
DC input voltage at pins 2 to 6
DC input voltage at pins 11 and 12
DC input voltage at pins 11 and 12
−0.3
−10
−40
VCC + 0.3
+27
VBUS
VCANH,L
VCC = 0 to 5.5 V;
+40
VBAT ≥ 0 V;t < 0.1 ms;
load dump
Vtr
transient voltage at pins 11 and 12
DC input voltage on pin 7
see Fig.6
−150
−
+100
V
VWAKE
IWAKE
V1,8,9
VBAT
VBAT + 0.3 V
input current pin 7
−15
−0.3
−0.3
−
−
mA
DC input voltage on pins 1, 8 and 9
DC input voltage on pin 14
voltage on pin 14
VBAT + 0.3 V
+27
V
V
Ω
load dump; 500 ms
note 1
40
R8,9
Tvj
termination resistances pins 8 and 9
virtual junction temperature
storage temperature
500
−40
−55
−2000
−200
16000
+150
+150
+2000
+200
°C
°C
V
Tstg
Vesd
electrostatic discharge voltage at any pin
note 2
note 3
V
Notes
1. Junction temperature in accordance with IEC 747-1. An alternative definition is: Tvj = Tamb + PD × Rth vj-a
.
Where; Rth vj-a is a fixed value to be used for the calculation of Tvj. The rating for Tvj limits the allowable combinations
of power dissipation and ambient temperature.
2. Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ resistor.
3. Machine model: equivalent to discharging a 200 pF capacitor through a 25 Ω resistor.
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
Rth vj-a
thermal resistance from junction to ambient in free air
120
K/W
QUALITY SPECIFICATION
Quality specification in accordance with “SNW-FQ-611-Part-E”.
1997 Oct 28
7
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
CHARACTERISTICS
VCC = 4.75 to 5.25 V; VSTB = VCC; VBAT = 6 V to 27 V; Tamb = −40 to +125 °C; unless otherwise specified. All voltages
are defined with respect to ground. Positive currents flow into the IC. All parameters are guaranteed over the
temperature range by design, but only 100% tested at 25 °C.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supplies
ICC
supply current
recessive; TXD = VCC
normal operating mode
;
−
−
−
−
−
−
1
6
10
mA
mA
µA
µA
µA
V
dominant; TXD = 0 V; no load;
normal operating mode
29
120
55
50
−
35
ICC + IBAT supply current (VCC standby)
supply current (VBAT standby)
VCC = 5 V; VBAT = 12 V;
Tamb < 90 °C
1000
80
VCC = 5 V; VBAT = 12 V;
Tamb < 90 °C
IBAT
supply current (sleep mode)
VCC = 0 V; VBAT = 12 V;
Tamb < 90 °C
75
VBAT
tpwon
battery voltage for setting
power-on flag
low power modes
1.0
−
battery voltage low time for
setting power-on flag
low power modes
−
s
Pins STB, EN and TXD
VIH
VIL
IIH
HIGH level input voltage
0.7VCC
−0.3
−
−
−
9
VCC + 0.3 V
LOW level input voltage
0.3VCC
20
V
HIGH level input current
(pins STB and EN)
Vi = 4 V
Vi = 1 V
Vi = 4 V
Vi = 1 V
µA
IIL
LOW level input current
(pins STB and EN)
4
8
−
µA
µA
µA
V
IIH
HIGH level input current
(pin TXD)
−25
−100
2.75
−80
−200
IIL
LOW level input current
(pin TXD)
−320 −800
VCC
forced battery voltage standby
mode (fail safe)
−
4.5
Pins RXD and NERR
VOH
VOH
VOL
HIGH level output voltage
(pin NERR)
Io = −100 µA
Io = −250 µA
Io = 1.25 mA
V
V
0
CC − 0.9
−
−
−
VCC
VCC
0.9
V
V
V
HIGH level output voltage
(pin RXD)
CC − 0.9
LOW level output voltage
Pin WAKE
IIL
LOW level input current
VWAKE = 0 V; VBAT = 27 V
VSTB = 0 V
−10
−120 −250
3.2
µA
Vwu(th)
wake-up threshold voltage
1.2
−
V
1997 Oct 28
8
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Pin INH
VdropH
HIGH level voltage drop
leakage current
IINH = −0.18 mA; VBAT < 16 V
−
−
−
−
0.8
V
IINH = −0.18 mA; VBAT > 16 V
−
−
1.0
5.0
V
ILI
sleep mode; VINH = 0 V
µA
Pins CANH and CANL
Vdrx(rd) differential receiver
−3.25
−
−2.65
V
recessive-to-dominant
threshold voltage
Vdrx(dr)
differential receiver
dominant-to-recessive
threshold voltage
no bus failures
0.4
0.7
1.0
V
V
bus failures 1, 2 and 5
−3.25
−
−2.65
VoCANHrec CANH recessive output voltage TXD = VCC; RRTH < 4 kΩ
VoCANLrec CANL recessive output voltage TXD = VCC; RRTL < 4 kΩ
−
−
−
−
0.2
−
V
V
V
V
CC − 0.2
CC − 1.4
VoCANHdom CANH dominant output voltage TXD = 0 V; V6 = VCC
;
V
−
ICANH = −40 mA
VoCANLdom CANL dominant output voltage
TXD = 0 V; V6 = VCC
ICANL = 40 mA
;
−
−
1.4
V
IoCANH
CANH output current
CANL output current
VCANH = 0 V; TXD = 0 V
sleep mode; VCANH = 12 V
VCANL = 14 V; TXD = 0 V
−
−
−
−
−75
0
−100
−
mA
µA
IoCANL
90
0
130
−
mA
µA
sleep mode; VCANL = 0 V,
VBAT = 12 V
Vdetth
voltage detection threshold for
short-circuit to battery voltage
on CANH and CANL
normal mode
6.5
7.3
8.0
V
V
Vdetth
voltage detection threshold for
short-circuit to battery voltage
on CANH
standby/sleep mode
VBAT − 2.5 −
VBAT − 1
VwuL
CANL wake-up voltage
threshold
2.4
1.2
0.2
1.5
2.8
3.1
1.9
−
3.8
2.7
−
V
V
V
V
V
VwuH
∆Vwu
VCANH
VCANL
CANH wake-up voltage
threshold
wake-up voltage threshold
difference
CANH single-ended receiver
threshold
failures 4, 6 and 7
failure 3
1.82
3.1
2.15
3.4
CANL single-ended receiver
threshold voltage
1997 Oct 28
9
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Pins RTH and RTL
RRTL
RTL to VCC switch-on resistance Io < 10 mA;
normal operating mode
−
7
25
Ω
Io < 1 mA; VCC
standby mode
−
15
16
43
75
28
95
Ω
RTL to BAT switch series
resistance
VBAT standby or sleep mode
10
−
kΩ
Ω
RRTH
RTH to ground switch-on
resistance
Io < 10 mA;
normal operating mode
VoRTH
IRTLpu
RTH output voltage
RTL pull-up current
Io = 1 mA; low power modes
−
−
0.7
75
1.0
V
normal operating mode,
failures 4, 6 and 7
−
µA
IRTHpd
RTH pull-down current
normal operating mode,
failure 3
−
75
−
µA
°C
Thermal shutdown
Tjsd
shut down junction temperature
155
165
180
AC CHARACTERISTICS
VCC = 4.75 to 5.25 V; VSTB = VCC; VBAT = 6 V to 27 V; Tamb = −40 to +125 °C; unless otherwise specified. All voltages
are defined with respect to ground. Positive currents flow into the IC. All parameters are guaranteed over the
temperature range by design, but only 100% tested at 25 °C.
SYMBOL
PARAMETER
CONDITIONS
MIN.
0.6
TYP.
MAX.
UNIT
trd
CANL and CANH bus output
transition time
recessive-to-dominant
10% to 90%; C1 = 10 nF;
C2 = 0; R1 = 100 Ω
0.85
−
−
µs
tdr
CANL and CANH bus output
transition time
dominant-to-recessive
10% to 90%; C1 = 1 nF;
C2 = 0; R1 = 100 Ω
0.3
−
0.4
0.75
1
µs
µs
µs
µs
µs
tPD(L)
propagation delay TXD-to-RXD C1 = 100 pF; C2 = 0;
1.25
1.5
1.3
1.7
LOW
R1 = 100 Ω; no failures and
bus failures 1, 2 and 5
C1 = C2 = 3.3 nF;
R1 = 100 Ω; no failures and
bus failures 1, 2 and 5
−
C1 = 100 pF; C2 = 0;
R1 = 100 Ω;
bus failures 3, 4, 6 and 7
−
0.85
1.1
C1 = C2 = 3.3 nF; R1 = 100 Ω;
−
bus failures 3, 4, 6 and 7
1997 Oct 28
10
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
1.25
UNIT
tPD(H)
propagation delay TXD-to-RXD C1 = 100 pF; C2 = 0;
−
−
−
0.75
µs
HIGH
Rl = 100 Ω; no failures and bus
failures 1, 2 and 5
C1 = C2 = 3.3 nF; Rl = 100 Ω;
no failures and bus failures
1 and 2
1
1.5
1.3
µs
µs
C1 = 100 pF; C2 = 0;
R1 = 100 Ω;
0.85
bus failures 3, 4, 6 and 7
C1 = C2 = 3.3 nF; R1 = 100 Ω;
bus failures 3, 4, 5, 6 and 7
−
8
8
1.4
−
2.1
38
38
µs
µs
µs
two(min)
minimum dominant time for
wake-up on CANL or CANH
low power modes VBAT = 12 V
tWAKE(min) minimum WAKE LOW time for
wake-up
low power modes VBAT = 12 V
−
tfail
failures 3 and 6 detection time
failure 3 recovery time
normal mode
normal mode
normal mode
normal mode
normal mode
10
10
−
−
−
−
−
−
4
−
60
60
750
4.0
60
8.0
−
µs
µs
µs
ms
µs
ms
ms
µs
failure 6 recovery time
150
0.75
10
failures 4 and 7 detection time
failures 4 and 7 recovery time
failures 3, 4 and 7 detection time low power modes; VBAT = 12 V 0.8
failures 3, 4 and 7 recovery time low power modes; VBAT = 12 V
−
th(min)
minimum hold time to go to
sleep command
5
50
∆ec
edge-count difference between normal mode
CANH and CANL for failures 1,
2 and 5 detection (NERR
−
−
3
−
−
becomes LOW)
edge-count difference between normal mode
CANH and CANL for failures 1,
2 and 5 recovery
1
1997 Oct 28
11
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
TEST AND APPLICATION INFORMATION
+
5 V
d
+12 V
BAT
V
INH
CC
1
14
10
R1
C1
C2
WAKE
TXD
STB
EN
RTH
7
2
5
6
3
8
CANL
12
PCA82C252
CANH
RTL
11
9
RXD
R1
C1
13
GND
4
20 pF
NERR
MBH550
For testing, the 100 Ω termination resistors are not connected to RTH or RTL because a minimum 500 Ω per transceiver is allowed.
The capacitive bus load of 10 nF is split up into 3 capacitors to simulate the cable.
Fig.3 Test circuit for dynamic characteristics.
V
V
a
CC
TXD
0 V
V
V
5 V
CANL
3.6 V
1.4 V
0 V
CANH
2.2 V
0.7 V
−2.9 V
−5 V
V
diff
V
RXD
0.7V
CC
0.3V
CC
t
t
PD(H)
PD(L)
Vdiff = VCANH − VCANL
MBH549
Fig.4 Timing diagram for dynamic characteristics.
12
1997 Oct 28
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
V
BAT
BATTERY
+
5 V
P8xC292/P8xCE598
CAN CONTROLLER
+5 V
CTX0
TXD
CRXO
RXD
STB
NERR EN
6
INH
2
3
5
4
1
9
BAT
V
WAKE
7
14
10
13
CC
PCA82C252
CAN TRANSCEIVER
100 nF
GND
8
11
12
CANL
RTH
CANH
RTL
CAN BUS LINE
MBH552
Fig.5 Application of the PCA82C252.
+
5 V
+
12 V
V
INH
BAT
CC
1
14
10
100 Ω
WAKE
TXD
STB
EN
RTH
7
2
5
6
3
8
CANL
12
1 nF
GENERATOR
PCA82C252
CANH
RTL
11
9
1 nF
RXD
100 Ω
13
GND
4
20 pF
NERR
MBH551
The waveforms of the applied transients will be in accordance with ISO 7637 part 1, test pulses 1, 2, 3a and 3b.
Fig.6 Test circuit for automotive transients.
1997 Oct 28
13
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
PACKAGE OUTLINE
SO14: plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
D
E
A
X
c
y
H
v
M
A
E
Z
8
14
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
7
e
detail X
w
M
b
p
0
2.5
scale
5 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
A
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
p
Q
v
w
y
Z
θ
1
2
3
p
E
max.
0.25
0.10
1.45
1.25
0.49
0.36
0.25
0.19
8.75
8.55
4.0
3.8
6.2
5.8
1.0
0.4
0.7
0.6
0.7
0.3
mm
1.75
1.27
0.050
1.05
0.25
0.01
0.25
0.1
0.25
0.01
8o
0o
0.010 0.057
0.004 0.049
0.019 0.0100 0.35
0.014 0.0075 0.34
0.16
0.15
0.244
0.228
0.039 0.028
0.016 0.024
0.028
0.012
inches
0.041
0.01 0.004
0.069
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
95-01-23
97-05-22
SOT108-1
076E06S
MS-012AB
1997 Oct 28
14
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
SOLDERING
Introduction
Wave soldering
Wave soldering techniques can be used for all SO
packages if the following conditions are observed:
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream end.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Reflow soldering
Reflow soldering techniques are suitable for all SO
packages.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Repairing soldered joints
Fix the component by first soldering two diagonally-
opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
1997 Oct 28
15
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
DEFINITIONS
Data sheet status
Objective specification
Preliminary specification
Product specification
This data sheet contains target or goal specifications for product development.
This data sheet contains preliminary data; supplementary data may be published later.
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Oct 28
16
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
NOTES
1997 Oct 28
17
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
NOTES
1997 Oct 28
18
Philips Semiconductors
Product specification
Fault-tolerant CAN transceiver
PCA82C252
NOTES
1997 Oct 28
19
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Internet: http://www.semiconductors.philips.com
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
© Philips Electronics N.V. 1997
SCA55
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
897027/00/04/pp20
Date of release: 1997 Oct 28
Document order number: 9397 750 02969
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