HEF4794BT-Q100: 8-stage shift-and-store register LED driver
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 VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Connect unused inputs to VDD, VSS, or another input.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
sot109-1_3d
Data Sheets (1)
Application Notes (1)
Brochures (2)
Package Information (1)
Packing (1)
Supporting Information (2)
Ordering Information
| Product | Status | VCC (V) | Family | Logic switching levels | Description | Output drive capability (mA) | tpd (ns) | No of bits | Power dissipation considerations | Tamb (Cel) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name | No of pins | Package version |
|---|
| HEF4794BT-Q100 | Active | 4.5 - 15 | HEF4000B | CMOS | 8-bit serial-in/serial or parallel-out shift register with output register LED driver (3-state) | -20 | 45 | 8 | medium | -40~85 | 83 | 5.3 | 41 | SO16 | 16 | SOT109-1 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | MSL | MSL LF |
|---|
| HEF4794BT-Q100 | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE
SO-SOJ-REFLOW
SO-SOJ-WAVE | Reel 13" Q1/T1 | Active | HEF4794BT-Q100J
(9352 992 51118) | HEF4794BT | HEF4794BT-Q100 |    | Always Pb-free | 75.3 | 1 | 1 |
