Datasheet

MCP2551
DS20001667G-page 12  2001-2016 Microchip Technology Inc.
2.3 AC Characteristics
AC Specifications
Electrical Characteristics:
Industrial (I): TAMB = -40°C to +85°C VDD = 4.5V to 5.5V
Extended (E): TAMB = -40°C to +125°C VDD = 4.5V to 5.5V
Param
No.
Sym Characteristic Min Max Units Conditions
1 tBIT Bit time 1 62.5 µs VRS = 0V
2 fBIT Bit frequency 16 1000 kHz VRS = 0V
3 TtxL2bus(d) Delay TXD to bus active — 70 ns
-40°C  TAMB  +125°C,
VRS = 0V
4 TtxH2bus(r) Delay TXD to bus inactive
— 125 ns
-40°C  TAMB  +85°C, 
VRS = 0V
— 170 ns
-40°C  TAMB  +125°C,
VRS = 0V
5 TtxL2rx(d) Delay TXD to receive active
— 130 ns
-40°C  TAMB  +125°C,
VRS = 0V
— 250 ns
-40°C  TAMB  +125°C,
RS = 47 k
6 TtxH2rx(r)
Delay TXD to receiver
inactive
— 175 ns
-40°C  TAMB  +85°C, 
VRS = 0V
— 225 ns
-40°C  TAMB  +85°C, 
RS = 47 k
— 235 ns
-40°C  TAMB  +125°C,
VRS = 0V
— 400 ns
-40°C  TAMB  +125°C,
RS = 47 k
7 SR CANH, CANL slew rate 5.5 8.5 V/µs
Refer to Figure 2-1;
RS = 47 kNote 1)
10 tWAKE
Wake-up time from standby
(Rs pin)
— 5 µs See Figure 2-5
11 TbusD2rx(s)
Bus Dominant to RXD Low
(Standby mode)
— 550 ns VRS = +4V; (See Figure 2-6)
12
CIN(CANH)
CIN(CANL)
CANH; CANL input
capacitance
—
20
(typical)
pF
1 Mb/s data rate;
VTXD = VDD, (Note 1)
13 CDIFF
Differential input
capacitance
—
10
(typical)
pF
1 Mb/s data rate
(Note 1)
14 TtxL2busZ
TX Permanent Dominant
Timer Disable Time
1.25 4 ms
15 TtxR2pdt(res)
TX Permanent Dominant
Timer Reset Time
— 1 µs
Rising edge on TXD while
device is in permanent
Dominant state
Note 1: This parameter is periodically sampled and not 100% tested.