UCN-5800A

The UCN-5800A  has the following features including 4.4 MHz Minimum Data Input Rate;High-Voltage, High-Current Outputs;Output Transient Protection;CMOS, PMOS, NMOS, TTL Compatible Inputs;Internal Pull-Down Resistors;Low-Power CMOS Latches.

THE UCN-5800A  is high-voltage, high-current integrated circuit comprised of four or eight CMOS data latches, a bipolar Darlington transistor driver for each latch, and CMOS control circuitry for the commonLEAK, STKOBE, and OUTPUT ENABLE functions.The bipolar/MOS combination provides an extremely low-power latch with maximum interface flexibility. Type UCN-5800A contains four latched drivers; Type UCN-5801A contains eight latched drivers.BiMOS 11 devices have much faster data input rates than the original BiMOS circuits. With a 5 V supply, they will typically operate at better than 5 MHz. With a 12 V supply, significantly higher speeds arc obtained.The CMOS inputs are compatible with standard CMOS. PMOS, and NMOS circuits.TTL or DTL circuits may require the use of appropriate pull-up resistors. The bipolar outputs are suitable Cur use with relays, solenoids, stepping motors, LED or in-candescent displays, and other high-power loads.Both units have open-collector outputs and integral diodes for inductive load transient suppression.The output transistors are capable of sinking 500 mA and will sustain at least 50 V in the oFF state. Be- cause of limitations on package power dissipation,the simultaneous operation of all drivers at maximum rated current can only be accomplished by a reduction in duty cycle. Outputs may be paralleled for higher load current capability.IICN-5800A, the 4-latch device, is furnished in a standard 14-pin dual in-line plastic package. UCN-5801 A, the 8-latch device, is supplied in a 22-pin dual in-line plastic package with lead spacing on 0.400"(10.16 mm) centers. ho simplify circuit board lay-out, all outputs are opposite their respective inputs.

Information present at an input is transferred to its latch when the STROBE is high. A high CLEAR input will set all latches to the output OFF condition regardless of the data or STROBE input levels. A high OUTPUT ENABLE will set all outputs to the OFF condition, regardless of any other input conditions. When the OUTPUT ENABLE is low, the outputs depend on the state of their respective latches.