HI-3000, HI-3001, HI-3002
PIN DESCRIPTIONS
SIGNAL
TXD
GND
VDD
RXD
CANL
CANH
STB
SPLIT
(HI-3000)
VIO
(HI-3001)
FUNCTION
INPUT
POWER
POWER
OUTPUT
BUS I/O
BUS I/O
INPUT
INPUT
INPUT
DESCRIPTION
100kOhm internal pull-up. Transmit Data Input.
Chip 0V supply
Positive supply, 5V +/-5%. Bypass with 0.1uF ceramic capacitor.
Receive Data Output.
CAN Bus Line Low.
CAN Bus Line High.
100kOhm internal pull-up. Standby Mode selection input. Drive STB low or connect to GND
for Normal operation. Drive STB high to select low-current Standby Mode.
Supplies a VDD/2 output to provide recessive bus level stabilization when a split termination
is used to terminate the bus.
Connect to a 3.3V supply to allow compatibility of all digital I/O (RXD, TXD, STB) with a
3.3V controller input.
BLOCK DIAGRAM
VDD
V Split
SPLIT
(HI-3000)
CANH
TXD
Dominant
Detect
CANL
Driver
TXD
Standby
Control
STB
VIO
(HI-3001)
RXD
MUX
Main
Receiver
GND
Low power
Standby Rx
Figure 1. HI-3000 Functional Block Diagram
HOLT INTEGRATED CIRCUITS
2
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
