HEF4094B
8-stage shift-and-store bus register
Rev. 04 — 30 October 2008
Product data sheet
1. General description
The HEF4094B is an 8-stage serial shift register. It has a storage latch associated with
each stage for strobing data from the serial input to parallel buffered 3-state outputs
QP0 to QP7. The parallel outputs may be connected directly to common bus lines. 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 (OE) signal is HIGH.
Two serial outputs (QS1 and QS2) are available for cascading a number of HEF4094B
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
HEF4094B devices when the clock has a slow rise time.
It operates over a recommended V
DD
power supply range of 3 V to 15 V referenced to V
SS
(usually ground). Unused inputs must be connected to V
DD
, V
SS
, or another input. It is
also suitable for use over the industrial (−40
°C
to +85
°C)
and automotive (−40
°C
to
+125
°C)
temperature ranges.
2. Features
I
I
I
I
I
I
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Operates across the automotive temperature range
−40 °C
to +125
°C
Complies with JEDEC standard JESD 13-B
ESD protection:
N
HBM JESD22-A114E exceeds 2000 V
N
MM JESD22-A115-A exceeds 200 V
3. Ordering information
Table 1.
Ordering information
All types operate from
−
40
°
C to +125
°
C.
Type number
HEF4094BP
HEF4094BT
HEF4094BTS
Package
Name
DIP16
SO16
SSOP16
Description
plastic dual in-line package; 16-leads (300 mil)
plastic small outline package; 16 leads; body width 3.9 mm
plastic shrink small outline package; 16 leads; body width 5.3 mm
Version
SOT38-4
SOT109-1
SOT338-1