Philips Semiconductors
Productspecification
CAN transceiver for 24 V systems
PCA82C251
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
VCC
UNIT
VOH
HIGH-level output voltage I4 = −100 µA
0.8VCC
−
V
(pin 4)
VOL
LOW-level output voltage
(pin 4)
I4 = 1 mA
0
0
5
−
−
−
0.2VCC
1.5
V
V
I4 = 10 mA
Ri
CANH, CANL input
resistance
25
kΩ
Rdiff
differential input resistance
20
−
100
kΩ
Reference output
Vref reference output voltage
V8 = 1 V; I5 < 50 µA
V8 = 4 V; I5 < 5 µA
0.45VCC
0.4VCC
−
−
0.55VCC
0.6VCC
V
V
Timing (RL = 60 Ω; CL = 100 pF; unless otherwise specified. See Figs 3 and 4)
tbit
minimum bit time
R8 = 0 Ω
R8 = 0 Ω
−
−
−
−
−
1
µs
ns
ns
ns
tonTXD
toffTXD
tonRXD
delay TXD to bus active
−
50
80
120
delay TXD to bus inactive R8 = 0 Ω
40
55
delay TXD to receiver
active
R8 = 0 Ω
toffRXD
delay TXD to receiver
inactive
R8 = 0 Ω; Tamb < +85 °C;
VCC = 4.5 to 5.1 V
−
80
150
ns
R8 = 0 Ω; VCC = 4.5 to 5.1 V
R8 = 0 Ω; Tamb < +85 °C
R8 = 0 Ω
−
−
−
−
−
80
90
90
170
170
190
400
550
ns
ns
ns
ns
ns
R8 = 47 kΩ
290
440
tonRXD
delay TXD to receiver
active
R8 = 47 kΩ
SR
CANH, CANL slew rate
R8 = 47 kΩ
−
−
7
−
V/µs
µs
tWAKE
wake-up time from standby see Fig.6
(via pin 8)
−
20
tdRXDL
bus dominant to RXD LOW V8 = 4 V; see Fig.7
−
−
−
3
µs
Standby/slope control (pin 8)
Vstb
input voltage for standby
mode
0.75VCC
−
V
Islope
slope control mode current
slope control mode voltage
−10
−
−
−200
µA
Vslope
0.4VCC
0.6VCC
V
Notes
1. I1 = I4 = I5 = 0 mA; 0 V < V6 < VCC; 0 V < V7 < VCC; V8 = VCC; Tamb < 90 °C.
2. This is valid for the receiver in all modes: high-speed, slope control and standby.
2000 Jan 13
7
NXP [ NXP ]
