1. general description the npic6c4894 is a 12-stage serial shift regist er. it has a storage latch associated with each stage for strobing data from the serial input (d) to the parallel open-drain outputs (qp0 to qp11). data is shifted on positive-goi ng clock (cp) transitions. the data in each shift register stage is transferred to the storage register when the latch enable (le) input is high. data in the storage register drives the gate of the output extended-drain nmos transistor whenever the output enable inpu t (oe) is high. a low on oe causes the outputs to assume a high-impedance off-state. operation of the oe input does not affect the state of the registers. two serial outputs (qs1 and qs2) are available for cascading a number of nic6c4894 devices. serial data is available at qs1 on positive-going clock edges to allow high-speed operation in cascaded systems with a fast clock rise time. the same serial data is available at qs2 on the next negative going clock edge. it is used for cascading npic6c4894 devices when the cl ock has a slow rise time. the open-drain outputs are 33 v/100 ma cont inuous current extended-drain nmos transistors designed for use in systems that require moderate load power such as leds. integrated voltage clamps in the outputs, provide protection ag ainst inductive transients. this protection makes the device suitable for power driver applications such as relays, solenoids and other low-current or medium-voltage loads. 2. features and benefits ? specified from ? 40 ? cto+125 ? c ? low r dson ? 12 power ednmos transistor output s of 100 ma continuous current ? 250 ma current limit capability ? output clamping voltage 33 v ? 30 mj avalanche energy capability ? low power consumption ? latch-up performance exceeds 100 ma per jesd 78 class ii level a ? esd protection: ? hbm js-2011 class 2 exceeds 2500 v ? cdm jesd22-c101e exceeds 1000 v npic6c4894 power logic 12-bit shift register; open-drain outputs rev. 1 ? 17 april 2014 product data sheet
npic6c4894 all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2014. all rights reserved. product data sheet rev. 1 ? 17 april 2014 2 of 21 nxp semiconductors npic6c4894 power logic 12-bit shift register; open-drain outputs 3. applications ? led sign ? graphic status panel ? fault status indicator 4. ordering information 5. functional diagram table 1. ordering information type number package temperature range name description version npic6c4894d ? 40 ? c to +125 ? c so20 plastic small outline package; 20 leads; body width 7.5 mm sot163-1 NPIC6C4894PW ? 40 ? c to +125 ? c tssop20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm sot360-1 fig 1. logic symbol d d d 2 ( ' & |