LTC1045 Programmable Micropower Hex Translator/ Receiver/Driver FEATURES DESCRIPTIO n Efficiently Translate Voltage Levels The LTC 1045 is a hex level translator manufactured using TM n Internal Hysteresis for Noise Immunity Linear Technologys enhanced LTCMOS silicon gate n Output Latches Included process. It consists of six high speed comparators with n Three-State Outputs output latches and three-state capability. Each compara- n Programmable Power/Speed tors plus input is brought out separately. The minus inputs n Power Can Be Completely Shut Off of comparators 1 to 4 are tied to V while 5 and 6 are TRIP1 n 50V on Inputs with External 100k Limit Resistor tied to V . TRIP2 n 1.2m s Response at 100m A Supply Current + The I pin has several functions. When taken to V the SET outputs are latched and power is completely shut off. U APPLICATIO S Power/speed can be programmed by connecting I to V SET through an external resistor. n TTL/CMOS to 5V Analog Switch Drive n TTL to CMOS (3V to 15V V ) CC n ECL to CMOS (3V to 15V V ) CC n Ground Isolation Buffer , LTC and LT are registered trademarks of Linear Technology Corporation. n Low Power RS232 Line Receiver LTCMOS is a trademark of Linear Technology Corporation. TYPICAL APPLICATIO 5V Flat Ribbon Cable Driver/Receiver 5V 20 + V XMT IN 1 TTL IN + 20 V + OH V XMT OUT 66-FT FLAT RIBBON CABLE RCV IN V OL 1 + V Z = 150 O OH DIS 11 RCV OUT 150 I V 1.4V SET 13 OL TTL OUT ADJACENT CONDUCTORS DIS V 12 11 I 10 0.5V SET 13 V 12 10 1045 TA01 XMT IN (5V/DIV) XMT OUT (1V/DIV) RCV IN (1V/DIV) RCV OUT (5V/DIV) 100ns/DIV 045 TA01a 1045fc 1 U ULTC1045 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Notes 1, 2) TOP VIEW ORDER PART + + 1 20 V V OH Total Supply Voltage (V , V to V , V ) .............. 18V OH OL NUMBER 2 OUT1 IN1 19 + Output High Voltage (V )...................................... V OH IN2 3 18 OUT2 4 17 OUT3 Input Voltage ....................................18V to (V 0.3V) IN3 LTC1045CN IN4 5 16 OUT4 Output Short-Circuit Duration LTC1045CSW IN5 6 15 OUT5 (V V 10V) ................................... Continuous OH OL 7 14 OUT6 IN6 V 8 13 DISABLE ESD (MIL-STD-883, Method 3015) .................... 2000V TRIP2 9 12 I V SET TRIP1 Operating Temperature Range ................. 40 C to 85 C V 10 11 V OL Storage Temperature Range ................. 55 C to 150 C N PACKAGE SW PACKAGE 20-LEAD PDIP 20-LEAD SO WIDE Lead Temperature (Soldering, 10 sec).................. 300 C T = 110 C, q = 90 C/ W (N) JMAX JA T = 110 C, q = 90 C/ W (SW) JMAX JA J PACKAGE 20-LEAD CERDIP LTC1045CJ T = 150 C, q = 70 C/ W (J) JMAX JA OBSOLETE PACKAGE Consider N Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating + temperature range, otherwise specifications are at T = 25 C. V = V = 5V, V = V = 0Vunless otherwise specified. (Note 3) . A OH OL SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS + I Input Bias Current V V V 1nA B IN l 0.5 m A + Trip Voltage Range (Pins 8, 9) l V V 2 V + + I V to V Supply Current DISABLE = V , R = 10k 2.5 3.5 mA S SET l 4.5 mA + + I V to V Supply Current in Shutdown DISABLE = I = V 10 nA OFF SET l 1 m A V Voltage on I (Pin 12) R = 10k 0.9 V REF SET SET l 0.6 1.25 V + V TTL Output High Voltage I = 360m A, V = 4.5V l 2.4 4.4 V OH OUT + V TTL Output Low Voltage I = 1.6mA, V = 4.5V l 0.2 0.4 V OL OUT + I Output Short-Circuit Sink Current V = V 100mV, V = V 7.5 15 mA SINK IN TRIP OUT l 5.5 mA I Output Short-Circuit Source Current V = V + 100mV, V = V 4.0 8.0 mA SOURCE IN TRIP OUT l 3.2 mA + I Three-State Leakage Current DISABLE = V , V V V 0.005 m A OZ OL OUT OH l 1 m A R Output Resistance to V I 100m A 260 475 W OH OH OUT l 600 W R Output Resistance to V I 100m A 100 180 W OL OL OUT l 250 W + I Voltage for Shutdown l V 0.5 V SET DISABLE Input Logic Levels + V V = 4.5V, V = 0V l 2.0 V IH + V V = 5.5V, V = 0V l 0.8 V IL Input Supply Differential l 4.5 15 V + (V V ) (Note 3) Output Supply Differential l315 V (V V ) (Note 3) OH OL 1045fc 2 U W U W U WW