NXP Semiconductors HEF4794B
The HEF4794B 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). The data in each shift register stage is transferred to the storage register when the strobe input (STR) is HIGH.| Part No. | HEF4794B |
|---|---|
| Datasheet | HEF4794B Download |
| Manufacturer |  NXP Semiconductors |
| Description | 8-stage shift-and-store register LED driver |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Fully static operation● 5 V, 10 V, and 15 V parametric ratings
● Standardized symmetrical output characteristics
● Specified from 40 C to +85 C and 40 C to +125 C
● 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
HEF4794BP DIP16 plastic dual in-line package; 16 leads (300 mil) HEF4794BT SO16 plastic small outline package; 16 leads; body width 3.9 mm Version SOT38-4 SOT109-1 NXP Semiconductors 4. Functional diagram HEF4794B 8-stage shift-and-store register LED driver 31 CP STR QS1 9 QS2 10 QP0 4 QP1 5 2D QP2 QP3 6 7 QP4 14 QP5 13 QP6 12 QP7 11 OE Fig 1. Logic symbol 15 001aaf111 2 D CP 3 1 STR 8-STAGE SHIFT REGISTER 8-BIT STORAGE REGISTER 10 QS2 9 QS1 15 OE OPEN-DRAIN OUTPUTS 4 5 6 7 14 13 12 11 QP0 QP2 QP4 QP6 QP1 QP3 QP5 QP7 001aag798 Fig 2. Functional diagram D CP STR OE STAGE 0 DQ CP FF 0 DQ LE LATCH 0 STAGES 1 TO 6 DQ CP STAGE 7 DQ CP FF 7 DQ LE LATCH 7 QS1 DQ LE LATCH QS2 Fig 3.
