TJA1054 Datasheet, PDF (16/25 Pages) NXP Semiconductors – Fault-tolerant CAN transceiver

NXP Semiconductors
TJA1054
Fault-tolerant CAN transceiver
V_TXD
V_CANL
V_CANH
2 V to V_CC
0V
5V
3.6 V
1.4 V
0V
2.2 V
∆V_CAN
V_RXD
t_PD(L)
V_diff = V_CANH − V_CANL
Fig 4. Timing diagram for dynamic characteristics
12. Test information
t_PD(H)
−3.2 V
−5 V
0.7V_CC
0.3V_CC
mgl424
TJA1054_4
Product data sheet
+5 V
INH
BAT
VCC
WAKE
1
7
14
10
RTH
R1
8
TXD
2
STB
5
EN
6
TJA1054
CANL
12
CANH
11
RXD
3
20 pF
13
GND
RTL
9
4
R1
ERR
C1
C2
C1
mgl423
Termination resistors R1 (100 Ω) are not connected to pin RTH or pin RTL for testing purposes
because the minimum load allowed on the CAN bus lines is 500 Ω per transceiver.
The capacitive bus load of 10 nF is split into 3 equal capacitors (3.3 nF) to simulate the bus
cable.
Fig 5. Test circuit for dynamic characteristics
Rev. 04 — 24 September 2009
© NXP B.V. 2009. All rights reserved.
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