TJA1055
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© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 5 — 6 December 2013
16 of 26
NXP Semiconductors
TJA1055
Enhanced fault-tolerant CAN transceiver
12. Test information
V
CAN
= V
CANH
V
CANL
Fig 4.
Timing diagram for dynamic characteristics
mgl424
−
5 V
−
3.2 V
2.2 V
0.7V
CC
0.3V
CC
0 V
5 V
1.4 V
3.6 V
0 V
2 V to
V
CC
V
TXD
V
CANL
V
CANH
Δ
V
CAN
V
RXD
t
PD(L)
t
PD(H)
V
TXD
is a rectangular signal of 50 kHz with 50 % duty cycle and slope time < 10 ns.
Termination resistors R
CAN_L
and R
CAN_H
(125
) are not connected to pin RTL or pin RTH for
testing purposes because the minimum load allowed on the CAN bus lines is 500
per
transceiver.
Fig 5.
Test circuit for dynamic characteristics
001aac932
RCAN_L
CCAN_L
RCAN_H
CCAN_H
RRTH
500
Ω
RRTL
500
Ω
CRXD
10 pF
TJA1055T
FAILURE
GENERATION
BAT
BAT
INH
TXD
V
TXD
+
5 V
V
BAT
= 5 V to 40 V
RXD
CANL
CANH
V
CC
EN
RTL
RTH
2
3
4
5
6
7
8
9
12
11
14
10
1
GND
GND
13
ERR
WAKE
STB
V
CC
