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Eight Single-Ended Line Drivers in One
Package
Digital Selection of High Mode
EIA232E/CCITT V.28 only, and Low
Mode EIA232E/V.28 & EIA423A/CCITT
V.10/X.26
Single External Resistor Controls Slew
Rate
Wide Supply Voltage Range
Tri-State Outputs
Output Short-Circuit Protection
Low Power Consumption
2kV ESD Protection on all Pins
DESCRIPTION
The UC5171 is a single-ended octal line driver designed to meet both
standard modem control applications (EIA232E/V.28), and long line
drive applications (EIA423A/V.10/X.26). The slew rate for all 8 drivers
is controlled by a single external resistor. The slew rate and output lev-
els in Low Mode are independent of the power variations.
Mode selection is accomplished by the select pin Ms logic 鈥渓ow鈥?for low
output mode (EIA232E/V.28 & EIA423A/V.10) or pin Ms logic 鈥渉igh鈥?for
high mode (EIA232E/V.28). High mode should only be used to drive
adapters that take power from the control lines, or applications using
high threshold receivers.
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ABSOLUTE MAXIMUM RATINGS
(Note 1)
V+ (Pin 20) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
V- (Pin 11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -15V
PLCC Power Dissipation, T
A
= 25擄C (Note 2) . . . . . . . . . . . . . . . . . . 1000 mW
DIP Power Dissipation, T
A
= 25擄C (Note 2) . . . . . . . . . . . . . . . . . . . . 1250 mW
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V to +7V
Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -12V to +12V
Slew Rate Resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2k to 10k鈩?/div>
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65擄C to +150擄C
Note 1: All voltages are with respect to ground, pin 18.
Note 2: Consult Packaging section of Databook for thermal limitations and
considerations of package.
FUNCTIONAL TABLE
INPUTS
OUTPUTS
EN
DATA
EIA-232E(3)
EIA-232E/EIA-423A
0
0
(V+)-3V
5V to 6V
0
1
(V-)+3V
-5V to -6V
1
X
High Z
High Z
Note 3: Minimum output swings.
CONNECTION DIAGRAMS
N PACKAGE (TOP VIEW)
Q PACKAGE (TOP VIEW)
7/95
1
2
3
4
5
