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HEF4894B
Datasheet
General description
The HEF4894B is a 12-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 QP11). Data is shifted on positive-going clock (CP) 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 output whenever the output enable (OE) input signal is HIGH.
Two serial outputs (QS1 and QS2) are available for cascading a number of HEF4894B 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 HEF4894B 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). Unused inputs must be connected to VDD, VSS, or another input. It is also suitable for use over both the industrial (-40 Cel to +85 Cel) and automotive (-40 Cel to +125 Cel) temperature ranges.
Features
- Fully static operation
- 5 V, 10 V, and 15 V parametric ratings
- Standardized symmetrical output characteristics
- Operates across the automotive temperature range from -40 Cel to +125 Cel
- Complies with JEDEC standard JESD 13-B
- ESD protection:
- HBM JESD22-A114E exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
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 |
| HEF4894BTT | HEF4894BTT | 9352 831 58112 | Volume production | SOT360-1
(TSSOP20) | Tube | Standard Marking | HEF4894BTT
| Always Pb-free |
| HEF4894BTT | HEF4894BTT-T | 9352 831 58118 | Volume production | SOT360-1
(TSSOP20) | Reel Pack, SMD, 13" | Standard Marking | HEF4894BTT
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| HEF4894BP | 9351 943 70112 | 1.0800 | NA | DIGI-KEY CORPORATION | 704 | 1/6/2009 | Buy online | Order samples | |
| NA | MOUSER ELECTRONICS | 649 | 1/7/2009 | Buy online | |||||
| HEF4894BT | 9351 943 80112 | 1.0800 | NA | ARROW ELECTRONICS | 1,661 | 1/6/2009 | Buy online | not available | |
| NA | DIGI-KEY CORPORATION | 1,054 | 1/6/2009 | Buy online | |||||
| HEF4894BT | 9351 943 80118 | 1.0800 | NA | MOUSER ELECTRONICS | 1,274 | 1/7/2009 | Buy online | Order samples | |
| HEF4894BTT | 9352 831 58112 | not available | |||||||
| HEF4894BTT | 9352 831 58118 | 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 |
| HEF4894BTT | SOT360-1
(TSSOP20) | 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
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