HEF4794BT-Q100J Nexperia

HEF4794B-Q100 8-stage shift-and-store register LED driver Rev. 2 7 November 2018 Product data sheet 1. General description The HEF4794B-Q100 is an 8-stage serial shift register. It has a storage latch associated with each stage for strobing data from the serial input (D) to the parallel LED driver outputs (QP0 to QP7). Data is shifted on the positive-going clock (CP) transitions. The data in each shift register stage is transferred to the storage register when the strobe input (STR) is HIGH. Data in the storage register appears at the outputs whenever the output enable input (OE) signal is HIGH. Two serial outputs (QS1 and QS2) are available for cascading a number of HEF4794B-Q100 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. This is used for cascading HEF4794B-Q100 devices when the clock has a slow rise time. It operates over a recommended V power supply range of 3 V to 15 V referenced to V (usually DD SS ground). Unused inputs must be connected to V , V , or another input. DD SS This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications. 2. Features and benefits Automotive product qualification in accordance with AEC-Q100 (Grade 1) Specified from -40 C to +85 C and from -40 C to +125 C Fully static operation 5 V, 10 V, and 15 V parametric ratings Standardized symmetrical output characteristics ESD protection: MIL-STD-883, method 3015 exceeds 2000 V HBM JESD22-A114F exceeds 2000 V MM JESD22-A115-A exceeds 200 V (C = 200 pF R = 0 ) Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from -40 C to +125 C. Type number Package Name Description Version HEF4794BT-Q100 SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1Nexperia HEF4794B-Q100 8-stage shift-and-store register LED driver 4. Functional diagram 3 1 CP STR QS1 9 QS2 10 2 D QP0 4 10 8-STAGE SHIFT QS2 3 REGISTER QP1 5 CP 9 QS1 QP2 6 2 D 1 QP3 7 8-BIT STORAGE STR REGISTER 14 QP4 QP5 13 15 OPEN-DRAIN QP6 12 OE OUTPUTS QP7 11 4 5 6 7 14 13 12 11 OE QP0 QP2 QP4 QP6 QP1 QP3 QP5 QP7 15 001aaf111 001aag798 Fig. 1. Logic symbol Fig. 2. Functional diagram STAGE 0 STAGES 1 TO 6 STAGE 7 D D Q D Q D Q QS1 CP CP D Q QS2 FF 0 FF 7 CP CP LE LATCH D Q D Q LE LE LATCH 0 LATCH 7 STR OE QP0 QP2 QP4 QP6 aaa-029301 QP1 QP3 QP5 QP7 Fig. 3. Logic diagram HEF4794B Q100 All information provided in this document is subject to legal disclaimers. Nexperia B.V. 2018. All rights reserved Product data sheet Rev. 2 7 November 2018 2 / 14