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HEF4894B
Datasheet
General description
The HEF4894B is a 12 stage serial shift register having a storage latch associated with each stage for strobing data from the serial input to parallel LED driver outputs O0 to O11. Data is shifted on positive-going clock transitions. The data in each shift register stage is transferred to the storage register when the strobe (STR) input is HIGH. Data in the storage register appears at the outputs whenever the output enable (EO) signal is HIGH.
Two serial outputs (Os and Os?) are available for cascading a number of HEF4894B devices. Data is available at Os on positive-going clock edges to allow high-speed operation in cascaded systems in which the clock rise time is fast. The same serial information is available at Os? on the next negative-going clock edge and provides cascading HEF4894B devices when the clock rise time is slow.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| HEF4894BP | HEF4894BPN | 9351 943 70112 | Volume production | SOT146-1
(DIP20) | Tube | Standard Marking | HEF4894BP
| Always Pb-free |
| HEF4894BT | HEF4894BTD | 9351 943 80112 | Volume production | SOT163-1
(SO20) | Tube | Standard Marking | HEF4894BT
| week 4, 2004 |
| HEF4894BT | HEF4894BTD-T | 9351 943 80118 | Volume production | SOT163-1
(SO20) | Tape reel smd | Standard Marking | HEF4894BT
| week 4, 2004 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| HEF4894BP | 9351 943 70112 | 1.0800 | NA | DIGI-KEY CORPORATION | 735 | 6/29/2008 | Buy online | Order samples |
| NA | MOUSER ELECTRONICS | 653 | 7/6/2008 | Buy online | ||||
| HEF4894BT | 9351 943 80112 | 1.0800 | NA | ARROW ELECTRONICS | 171 | 7/4/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 163 | 6/29/2008 | Buy online | ||||
| HEF4894BT | 9351 943 80118 | 1.0800 | NA | MOUSER ELECTRONICS | 1,984 | 7/6/2008 | Buy online | Order samples |
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|---|
| HEF4894BP | SOT146-1
(DIP20) | 12-Stage Shift-and-Store Register LED Driver | 28 @ 15 V | 45@15V | 4.5-15.5 V | 20 | Low Power or Automotive Applications | CMOS | 20 mA @ 15 V |
| HEF4894BT | SOT163-1
(SO20) | 8-Stage Shift-and-Store Register LED Driver | 28 @ 15 V | 45@15V | 4.5-15.5 V | 16 | Low Power or Automotive Applications | CMOS | -20 mA |
Similar products
HEF4894B links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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