PDF《定购信息 应用》

200 mA RXD OUTPUT LEVELS RXD High Output-Voltage Level VOH I = -1mA 0.8 x VCC VCC V RXD Low Output-Voltage Level VOL I = 4mA 0.4 V DC BUS RECEIVER (VTXD = VCC;

CANH and CANL externally driven;

-7V ≤ VCANH, VCANL ≤ +12V, unless otherwise specified) Differential Input Voltage (Recessive) VDIFF -7V ≤ VCM ≤ +12V 0.5 V VRS = VCC (standby mode) 0.5 Differential Input Voltage (Dominant) VDIFF Dominant 0.9 V VRS = VCC (standby mode) 1.1 Differential Input Hysteresis VDIFF(HYST)

20 mV CANH and CANL Input Resistance RI

20 50 k? Differential Input Resistance RDIFF

40 100 k? MODE SELECTION (RS) Input Voltage for High Speed VSLP 0.3 x VCC V Input Voltage for Standby VSTBY 0.75 x VCC V Slope-Control Mode Voltage VSLOPE RRS = 25kΩ to 200kΩ 0.4 x VCC 0.6 x VCC V High-Speed Mode Current IHS VRS = 0V -500 ?A SHUTDOWN (SHDN) SHDN Input Voltage High VSHDNH

2 V SHDN Input Voltage Low VSHDNL 0.8 V SHDN Pulldown Resistor RINSHDN

50 100 k? ??3 www.maximintegrated.com/cn Electrical Characteristics (continued) (VCC = +3.3V ±5%, RL = 60Ω, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) Note 1: All currents into device are positive;

all currents out of the device are negative. All voltages are referenced to device ground, unless otherwise noted. Note 2: No other devices on the BUS. Note 3: BUS externally driven. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Delay TXD to Bus Active (Figure 1) tONTXD VRS = 0V (≤ 1Mbps)

50 ns RRS = 25kΩ (≤ 500kbps)

183 RRS = 100kΩ (≤ 125kbps)

770 Delay TXD to Bus Inactive (Figure 1) tOFFTXD VRS = 0V (≤ 1Mbps)

70 ns RRS = 25kΩ (≤ 500kbps)

226 RRS = 100kΩ (≤ 125kbps)

834 Delay Bus to Receiver Active (Figure 1) tONRXD VRS = 0V (≤ 1Mbps)

80 ns RRS = 25kΩ (≤ 500kbps)

200 RRS = 100kΩ (≤ 125kbps)

730 Delay Bus to Receiver Inactive (Figure 1) tOFFRXD VRS = 0V (≤ 1Mbps)

100 ns RRS = 25kΩ (≤ 500kbps)

245 RRS = 100kΩ (≤ 125kbps)

800 Differential-Output Slew Rate SR VRS = 0V (≤ 1Mbps)

96 V/μs RRS = 25kΩ (≤ 500kbps) 12.5 RRSS = 100kΩ (≤ 125kbps) 2.9 RRS = 200kΩ (≤ 62.5kbps) 1.6 Bus Dominant to RXD Active tDRXDL VRS >

0.8 x VCC, standby, Figure

2 1 μs Standby to Receiver Active tSBRXDL BUS dominant, Figure

2 4 μs SHDN to Bus Inactive tOFFSHDN TXD = GND, Figure

3 (Note 2)

1 μs SHDN to Receiver Active tONSHDN BUS dominant, Fi gur e

3 (Note 3)

4 μs SHDN to Standby tSHDNSB Figure

4 20 μs ESD Protection Human Body Model ±12 kV ??4 www.maximintegrated.com/cn Timing Characteristics 图1. 时序图 图2. 待机信号时序图 图3. 关断信号时序图 图4. 关断至待机信号时序图 TXD VDIFF 0.9V RXD 0.5V VCC/2 VCC/2 tONTXD tONRXD tOFFTXD tOFFRXD VCC/2 VCC/2 Figure

1 RS VDIFF tSBRXDL tDRXDL 1.1V RXD BUS EXTERNALLY DRIVEN VCC x 0.75 VCC/2 VCC/2 Figure

2 SHDN VDIFF tOFFSHDN tONSHDN RXD BUS EXTERNALLY DRIVEN VCC/2 VCC/2 VCC/2 0.5V Figure

3 0.75V x VCC RS SHDN VCC/2 tSHDNSB Figure

4 ??5 www.maximintegrated.com/cn 时序图 (VCC = +3.3V, RL = 60Ω, CL = 100pF, TA = +25°C, unless otherwise specified.) SUPPLY CURRENT vs. DATA RATE MAX3051 toc02 DATA RATE (kbps) SUPPLY CURRENT (mA)

800 600

400 200

13 16

19 22

25 10

0 1000 TA = +25°C TA = -40°C TA = +85°C SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE (SHDN = VCC) MAX3051 toc03 TEMPERATURE (°C) SHUTDOWN SUPPLY CURRENT (nA)

60 35

10 -15

20 40

60 80

100 120

0 -40

85 DRIVER PROPAGATION DELAY vs. TEMPERATURE MAX3051 toc06 TEMPERATURE (°C) DRIVER PROPAGATION DELAY (ns)