Specifications

Appendix D Daughterboard Controllers 111
Supplying Power to the Daughterboard Controller
The host system provides the power to the Daughterboard controller.
The controller requires 70 mA (typical), 85 mA (maximum supply
current), at +5 volts DC, +5% regulation, and 100 mV maximum
ripple and noise.
Electrical Specifications for Transmit and Receive
Table 23 lists the D.C. characteristics for the universal asynchronous
receiver transmitter (UART). Specifically, these electrical
specifications are for Pin 13, RXD (data from host) and Pin 14, TXD
(data to host) on the male connector on the Daughterboard controller.
Table 23. D.C. Characteristics
Symbol Description Min Max Units Test Conditions
V
OL
Output Low Voltage 0.3
0.45
1.5
V
V
V
I
OL
= 200 µA
I
OL
= 3.2 mA
I
OL
= 7 mA
V
OH
Output High Voltage V
CC
– 0.3
V
CC
– 0.7
V
CC
– 1.5
V
V
V
I
OH
= –200 µA
I
OH
= –3.2 mA
I
OH
= –7 mA