LTC1045
Programmable
Micropower Hex Translator/
Receiver/Driver
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTIO
Efficiently Translate Voltage Levels
Internal Hysteresis for Noise Immunity
Output Latches Included
Three-State Outputs
Programmable Power/Speed
Power Can Be Completely Shut Off
±50V
on Inputs with External 100k Limit Resistor
1.2µs Response at 100µA Supply Current
The LTC
®
1045 is a hex level translator manufactured using
Linear Technology’s enhanced LTCMOS
TM
silicon gate
process. It consists of six high speed comparators with
output latches and three-state capability. Each compara-
tor’s plus input is brought out separately. The minus inputs
of comparators 1 to 4 are tied to V
TRIP1
while 5 and 6 are
tied to V
TRIP2
.
The I
SET
pin has several functions. When taken to V
+
the
outputs are latched and power is completely shut off.
Power/speed can be programmed by connecting I
SET
to V
–
through an external resistor.
APPLICATIO S
s
s
s
s
s
TTL/CMOS to
±5V
Analog Switch Drive
TTL to CMOS (3V to 15V V
CC
)
ECL to CMOS (3V to 15V V
CC
)
Ground Isolation Buffer
Low Power RS232 Line Receiver
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
5V
20
TTL IN
XMT IN
Flat Ribbon Cable Driver/Receiver
5V
+
–
V
+
1
V
OH
V
OL
DIS
13
11
20
XMT OUT
66-FT FLAT RIBBON CABLE
Z
O
= 150Ω
ADJACENT CONDUCTORS
150Ω
RCV IN
V
+
1
V
OH
V
OL
DIS
13
11
RCV OUT
1.4V
I
SET
12
10
V
–
0.5V
XMT IN (5V/DIV)
XMT OUT (1V/DIV)
RCV IN (1V/DIV)
RCV OUT (5V/DIV)
100ns/DIV
045 TA01a
U
+
–
TTL OUT
I
SET
12
1045 TA01
U
U
V
–
10
1045fc
1
LINER [ LINEAR TECHNOLOGY ]
