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74HC4094D-74HC4094DB-74HC4094N-74HCT4094D-74HCT4094N
74HC/HCT4094; 8-stage shift-and-store bus register
Philips Semiconductors Product specification
8-stage shift-and-store bus register 74HC/HCT4094
FEATURES Output capability: standard ICC category: MSI
GENERAL DESCRIPTIONThe 74HC/HCT4094 are high-speed Si-gate CMOS
devices and are pin compatible with the “4094” of the
“4000B” series. They are specified in compliance with
JEDEC standard no. 7A.
The 74HC/HCT4094 are 8-stage serial shift registers
having a storage latch associated with each stage for
strobing data from the serial input (D) to the parallel
buffered 3-state outputs (QP0 to QP7). The parallel outputs
may be connected directly to common bus lines.
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 “4094” devices. Data is available at
QS1 on the 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 QS2on
the next negative-going clock edge and is for cascading
“4094” devices when the clock rise time is slow.
APPLICATIONS Serial-to-parallel data conversion Remote control holding register
QUICK REFERENCE DATAGND = 0 V; Tamb = 25 °C; tr = tf = 6 ns
Notes CPD is used to determine the dynamic power dissipation (PDin μW): = CPD× VCC2×fi +∑ (CL× VCC2×fo) where: = input frequency in MHz = output frequency in MHz (CL× VCC2×fo) = sum of outputs= output load capacitance in pF
VCC= supply voltage in V For HC the condition is VI = GND to VCC
For HCT the condition is VI = GND to VCC− 1.5 V
ORDERING INFORMATION
Philips Semiconductors Product specification
8-stage shift-and-store bus register 74HC/HCT4094
PIN DESCRIPTION
Philips Semiconductors Product specification
8-stage shift-and-store bus register 74HC/HCT4094
Philips Semiconductors Product specification
8-stage shift-and-store bus register 74HC/HCT4094
FUNCTION TABLE
Notes H = HIGH voltage level = LOW voltage level= don’t care= high impedance OFF-state
NC= no change= LOW-to-HIGH CP transition= HIGH-to-LOW CP transition
Q’6= the information in the seventh register stage is transferred to the 8th register stage and QSn output at the
positive clock edge
Philips Semiconductors Product specification
8-stage shift-and-store bus register 74HC/HCT4094
DC CHARACTERISTICS FOR 74HCFor the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
AC CHARACTERISTICS FOR 74HCGND = 0 V; tr = tf = 6 ns; CL = 50 pF
