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74LVC594ABQ Datasheet Preview

74LVC594ABQ Datasheet

8-bit shift register

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74LVC594A
8-bit shift register with output register
Rev. 4 — 3 September 2020
Product data sheet
1. General description
The 74LVC594A is an 8-bit serial-in/serial or parallel-out shift register with a storage register.
Separate clock and reset inputs are provided on both shift and storage registers. The device
features a serial input (DS) and a serial output (Q7S) to enable cascading. Data is shifted on the
LOW-to-HIGH transitions of the SHCP input, and the data in the shift register is transferred to the
storage register on a LOW-to-HIGH transition of the STCP input. If both clocks are connected
together, the shift register will always be one clock pulse ahead of the storage register. A LOW
level on one of the two register reset pins (SHR and STR) will clear the corresponding register.
Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices
as translators in mixed 3.3 V and 5 V environments.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.
This device is fully specified for partial power down applications using IOFF. The IOFF circuitry
disables the output, preventing the potentially damaging backflow current through the device when
it is powered down.
2. Features and benefits
Overvoltage tolerant inputs to 5.5 V
Wide supply voltage range from 1.2 V to 3.6 V
CMOS low power dissipation
Direct interface with TTL levels
IOFF circuitry provides partial Power-down mode operation
Balanced propagation delays
All inputs have Schmitt-trigger action
Complies with JEDEC standard:
JESD8-7A (1.65 V to 1.95 V)
JESD8-5A (2.3 V to 2.7 V)
JESD8-C/JESD36 (2.7 V to 3.6 V)
ESD protection:
HBM JESD22-A114F exceeds 2000 V
CDM JESD22-C101E exceeds 1000 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C
3. Applications
Serial-to-parallel data conversion
Remote control holding register




nexperia

74LVC594ABQ Datasheet Preview

74LVC594ABQ Datasheet

8-bit shift register

No Preview Available !

Nexperia
74LVC594A
8-bit shift register with output register
4. Ordering information
Table 1. Ordering information
Type number
Package
Temperature range
74LVC594AD
-40 °C to +125 °C
Name
SO16
74LVC594APW -40 °C to +125 °C TSSOP16
74LVC594ABQ
-40 °C to +125 °C DHVQFN16
Description
Version
plastic small outline package; 16 leads;
body width 3.9 mm
SOT109-1
plastic thin shrink small outline package; 16 leads; SOT403-1
body width 4.4 mm
plastic dual in-line compatible thermal enhanced SOT763-1
very thin quad flat package; no leads; 16 terminals;
body 2.5 × 3.5 × 0.85 mm
5. Functional diagram
SHCP STCP
11
DS 14
10
12
9
15
1
2
3
4
5
6
7
13
Q7S
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
SHR STR mbc319
Fig. 1. Logic symbol
DS
14
SHCP
11
SHR
10
STCP
12
STR
13
8-STAGE SHIFT REGISTER
9
Q7S
8-BIT STORAGE REGISTER
15 1 2 3 4 5 6 7
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Fig. 2. Functional diagram
mbc320
74LVC594A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 3 September 2020
© Nexperia B.V. 2020. All rights reserved
2 / 18


Part Number 74LVC594ABQ
Description 8-bit shift register
Maker nexperia
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74LVC594ABQ Datasheet PDF






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