CX28331/CX28332/CX28333
2.0 Functional Description
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
2.8 DC Characteristics
2.8 DC Characteristics
Table 2-5. DC Characteristics
Parameter
Conditions
Min
2.0
Nom
—
Max
VGG + 0.3
0.8
Unit
V
V high threshold
Digital inputs
Digital inputs
ih
V low threshold
–0.3
2.4
—
V
il
V
oh high threshold
Digital outputs, Ioh = –4 mA
—
—
V
V low threshold
Digital outputs, Iol = 4 mA
—
—
0.4
V
ol
ILEAK
–10
—
200
µA
0 V ≤ digital Vin ≤ VGG
—
Input capacitance
Load capacitance
NOTE(S):
—
—
—
—
10
15
pF
pF
Digital outputs
1. The digital inputs of CX2833i are TTL 5 V compliant. These inputs are diode protected to DVDDIO and DVSSIO pins.
Additionally, all of the CX2833i digital inputs contain 75 kΩ pull-down resistors.
2. The digital outputs of CX2833i are also TTL 5 V compliant. However, these outputs will not drive to 5 V, nor will they accept
5 V external pull-ups. The output is DVDDC (3.3 V).
100985A
Conexant
2-21
CONEXANT [ CONEXANT SYSTEMS, INC ]
