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LS7272 Datasheet(PDF) 2 Page - LSI Computer Systems

Part # LS7272
Description  30 VOLT QUAD-CHANNEL DIFFERENTIAL LINE DRIVER
Download  6 Pages
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Manufacturer  LSI [LSI Computer Systems]
Direct Link  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7272 Datasheet(HTML) 2 Page - LSI Computer Systems

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7272-112912-2
 
NOTE: LS7272-20 does not have OPD pin.
INPUT / OUTPUT DESCRIPTION:
A / B / C / D
These are CMOS / TTL data inputs that can also operate with input levels up to the VDD power supply. All data input blocks contain hysteresis.
AO / BO / CO / DO / AO / BO / CO / DO
These outputs can be selected to be push-pull or open-drain using the OPD input pin (LS7272 only). When in push-pull mode, outputs switch
between VDD and VSS (Ground).
ENA
A logic low on this CMOS / TTL compatible input enables the output drivers while logic high forces them into a high-impedance state. This input is
also used to enable / disable the output short circuit thermal protection.
Applying a voltage between 7.5V and 12.5V to the ENA input will disable the thermal shutdown protection function. When using this feature, the Line
Driver Outputs are enabled but no longer protected.
OPD (LS7272 only)
A logic low on this connects the outputs as open-drain drivers. If this input is left floating, the outputs are connected as push-pull drivers.
LOW (LS7273 only)
This pin must be tied low.
1
4
5
7
8
2
3
6
A
AO
AO
n.c.
BO
BO
n.c.
20
19
18
17
16
15
14
13
VDD
D
DO
CO
ENA
DO
CO
C
10
9
12
11
VSS
B
n.c.
VSS
n.c.
1
4
5
7
8
2
3
6
A
AO
AO
n.c.
BO
BO
n.c.
20
19
18
17
16
15
14
13
VDD
D
DO
CO
ENA
DO
CO
C
10
9
12
11
VSS
B
n.c.
VSS
n.c.
FIGURE 3
FIGURE 4


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