Datasheet

MCP2021/2/1P/2P
DS22018F-page 22 © 2005-2012 Microchip Technology Inc.
2.2 DC Specifications
DC Specifications
Electrical Characteristics:
Unless otherwise indicated, all limits are specified for:
V
BB = 6.0V to 18.0V
T
A = -40°C to +125°C
C
LOADREG = 10 µF
Parameter Sym Min. Typ. Max. Units Conditions
Power
V
BB Quiescent Operating
Current
IBBQ 115 210 µA IOUT = 0 mA,
L
BUS recessive
— 120 215 µA VOUT = 3.3V
V
BB Transmitter-off
Current
IBBTO — 90 190 µA With V
REG
on, transmitter
off, receiver on, FAULT
/TXE
= V
IL, CS = VIH
—95210µAVOUT = 3.3V
V
BB Power-Down Current IBBPD —16 26 µAWith VREG powered-off,
receiver on and transmitter
off, FAULT/TXE = VIH,
TXD = V
IH, CS = VIL)
VBB Current with VSS
Floating
IBBNOGND -1
—
1mAVBB = 12V, GND to VBB,
VLIN = 0-18V
Microcontroller Interface
High Level Input Voltage
(TXD, FAULT
/TXE)
V
IH 2.0 or
(0.25V
REG
+0.8)
—
VREG
+0.3
V
Low Level Input Voltage
(TXD, FAULT/TXE)
V
IL -0.3
—
0.15 VREG V
High Level Input Current
(TXD, FAULT/TXE)
I
IH -2.5
—
—
µA Input voltage = 0.8*VREG
Low Level Input Current
(TXD, FAULT
/TXE)
I
IL -10
—
—
µA Input voltage = 0.2*VREG
Pull-up Current on Input
(TXD)
IPUTXD -3.0
—
—
µA ~800 kΩ internal pull-up to
V
REG @ VIH = 0.7*VREG
High Level Input Voltage
(CS/LWAKE)
VIH 0.7VREG
—
VBB V Through a current-limiting
resistor
Low Level Input Voltage
(CS/LWAKE)
V
IL -0.3
—
0.3VREG V
High Level Input Current
(CS/LWAKE)
I
IH —
—
7.0 µA Input voltage = 0.8*VREG
Low Level Input Current
(CS/LWAKE)
IIL —
—
3.0 µA Input voltage = 0.2*VREG
Pull-down Current on
Input (CS/LWAKE)
IPDCS —
—
6.0 µA ~1.3MΩ internal pull-down
to V
SS @ VIH = 3.5V
Note 1: Internal current limited. 2.0 ms maximum recovery time (R
LBUS = 0Ω, TX = 0.4 VREG, VLBUS = VBB).
2: For design guidance only, not tested.
3: Node has to sustain the current that can flow under this condition; bus must be operational under this
condition.