LTC1045 Datasheet, PDF (1/20 Pages) Linear Technology – Programmable Micropower Hex Translator/ Receiver/Driver

LTC1045
Programmable
Micropower Hex Translator/
Receiver/Driver
FEATURES
s _{Efficiently Translate Voltage Levels}
s _{Internal Hysteresis for Noise Immunity}
s _{Output Latches Included}
s _{Three-State Outputs}
s _{Programmable Power/Speed}
s _{Power Can Be Completely Shut Off}
s _{±50V on Inputs with External 100k Limit Resistor}
s _{1.2µs Response at 100µA Supply Current}
U
APPLICATIONS
s _{TTL/CMOS to ±5V Analog Switch Drive}
s _{TTL to CMOS (3V to 15V VCC)}
s _{ECL to CMOS (3V to 15V VCC)}
s _{Ground Isolation Buffer}
s _{Low Power RS232 Line Receiver}
DESCRIPTION
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
5V
TTL IN
1.4V
XMT IN
20
V⁺
+
1
V_OH
V_OL
XMT OUT
DIS 11
– ^ISET 13
V^– 12
10
Flat Ribbon Cable Driver/Receiver
5V
66-FT FLAT RIBBON CABLE
Z_O = 150Ω
ADJACENT CONDUCTORS
RCV IN
150Ω
0.5V
20
V⁺
+
1
V_OH
V_OL
RCV OUT
DIS 11
– ^ISET 13
V^– 12
10
TTL OUT
1045 TA01
XMT IN (5V/DIV)
XMT OUT (1V/DIV)
RCV IN (1V/DIV)
RCV OUT (5V/DIV)
100ns/DIV
045 TA01a
1