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What is 74HCT4094?

This electronic component, produced by the manufacturer "NXP Semiconductors", performs the same function as "8-stage shift-and-store bus register".


74HCT4094 Datasheet PDF - NXP Semiconductors

Part Number 74HCT4094
Description 8-stage shift-and-store bus register
Manufacturers NXP Semiconductors 
Logo NXP Semiconductors Logo 


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74HC4094; 74HCT4094
8-stage shift-and-store bus register
Rev. 7 — 10 February 2016
Product data sheet
1. General description
The 74HC4094; 74HCT4094 is an 8-bit serial-in/serial or parallel-out shift register with a
storage register and 3-state outputs. Both the shift and storage register have separate
clocks. The device features a serial input (D) and two serial outputs (QS1 and QS2) to
enable cascading. Data is shifted on the LOW-to-HIGH transitions of the CP input. Data is
available at QS1 on the LOW-to-HIGH transitions of the CP input to allow cascading when
clock edges are fast. The same data is available at QS2 on the next HIGH-to-LOW
transition of the CP input to allow cascading when clock edges are slow. The data in the
shift register is transferred to the storage register when the STR input is HIGH. Data in the
storage register appears at the outputs whenever the output enable input (OE) is HIGH. A
LOW on OE causes the outputs to assume a high-impedance OFF-state. Operation of the
OE input does not affect the state of the registers. Inputs include clamp diodes. This
enables the use of current limiting resistors to interface inputs to voltages in excess of
VCC.
2. Features and benefits
Complies with JEDEC standard JESD7A
Input levels:
For 74HC4094: CMOS level
For 74HCT4094: TTL level
Low-power dissipation
ESD protection:
HBM JESD22-A114F exceeds 2 000 V
MM JESD22-A115-A exceeds 200 V
Specified from 40 C to +85 C and from 40 C to +125 C
3. Applications
Serial-to-parallel data conversion
Remote control holding register

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74HCT4094 equivalent
NXP Semiconductors
74HC4094; 74HCT4094
8-stage shift-and-store bus register
7. Functional description
Table 3.
Inputs
CP
Function table[1]
OE STR
LX
LX
HL
HH
HH
HH
D
X
X
X
L
H
H
Parallel outputs
QP0
QPn
ZZ
ZZ
NC NC
L QPn 1
H QPn 1
NC NC
Serial outputs
QS1
QS2
Q6S
NC
NC Q7S
Q6S
NC
Q6S
NC
Q6S
NC
NC Q7S
[1] At the positive clock edge, the information in the 7th register stage is transferred to the 8th register stage and the QSn outputs.
H = HIGH voltage level; L = LOW voltage level; X = don’t care;
= positive-going transition; = negative-going transition;
Z = HIGH-impedance OFF-state; NC = no change;
Q6S = the data in register stage 6 before the LOW to HIGH clock transition;
Q7S = the data in register stage 7 before the HIGH to LOW clock transition.
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Fig 7. Timing diagram
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DDI
74HC_HCT4094
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 10 February 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
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Featured Datasheets

Part NumberDescriptionMFRS
74HCT4094The function is 8-stage shift-and-store bus register. PhilipsPhilips
74HCT4094The function is 8-stage shift-and-store bus register. NXP SemiconductorsNXP Semiconductors

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