74LVC594A

8-bit shift register with output register

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 I_OFF. The I_OFF circuitry disables the output, preventing the potentially damaging backflow current through the device when it is powered down.

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
I_OFF 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: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C

Applications

Serial-to-parallel data conversion
Remote control holding register

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	f_max (MHz)	Nr of bits	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	Ψ_th(j-top) (K/W)	R_th(j-c) (K/W)	Package name
74LVC594ABQ	Production	1.2 - 5.5	CMOS/LVTTL	± 24	3.1	180	8	low	-40~125	92	13.3	61	DHVQFN16
74LVC594AD	Production	1.2 - 5.5	CMOS/LVTTL	± 24	3.1	180	8	low	-40~125	91	9.3	51	SO16
74LVC594APW	Production	1.2 - 5.5	CMOS/LVTTL	± 24	3.1	180	8	low	-40~125	124	4.4	53.9	TSSOP16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LVC594ABQ	DHVQFN16 (SOT763-1)	SOT763-1		SOT763-1_115	Active	VC594A	74LVC594ABQ,115 ( 9352 824 66115 )
74LVC594AD	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_118	Active	74LVC594AD	74LVC594AD,118 ( 9352 824 44118 )
74LVC594APW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_118	Active	LVC594A	74LVC594APW,118 ( 9352 824 67118 )

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74LVC594AD	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_112	Withdrawn / End-of-life	74LVC594AD	74LVC594AD,112 ( 9352 824 44112 )
74LVC594APW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_112	Withdrawn / End-of-life	LVC594A	74LVC594APW,112 ( 9352 824 67112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product	Status	Comments
74LVC594AD	935282444112	2021-12-31	2022-06-30	74LVC594AD
74LVC594APW	935282467112	2021-12-31	2022-06-30	74LVC594APW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74LVC594ABQ	74LVC594ABQ,115	74LVC594ABQ	Always Pb-free
74LVC594AD	74LVC594AD,118	74LVC594AD	Always Pb-free
74LVC594APW	74LVC594APW,118	74LVC594APW	Always Pb-free

The variants in the table below are discontinued. See the table Discontinuation information for more information.

Type number	Orderable part number	Chemical content	RoHS	RHF-indicator	Leadfree conversion date
74LVC594AD	74LVC594AD,112	74LVC594AD			Always Pb-free
74LVC594APW	74LVC594APW,112	74LVC594APW			Always Pb-free

Quality and reliability disclaimer

Documentation (12)

File name	Title	Type	Date
74LVC594A	8-bit shift register with output register	Data sheet	2024-02-22
AN263	Power considerations when using CMOS and BiCMOS logic devices	Application note	2023-02-07
AN11009	Pin FMEA for LVC family	Application note	2019-01-09
lvc594a	74LVC594A IBIS model	IBIS model	2018-11-29
Nexperia_Selection_guide_2023	Nexperia Selection Guide 2023	Selection guide	2023-05-10
SOT763-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body	Package information	2023-05-11
SO-SOJ-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SO-SOJ-REFLOW	Footprint for reflow soldering	Reflow soldering	2009-10-08
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08
SOT109-1	plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body	Package information	2023-11-07
SOT403-1	plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body	Package information	2023-11-08
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08

Support

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Models

File name	Title	Type	Date
lvc594a	74LVC594A IBIS model	IBIS model	2018-11-29

Ordering, pricing & availability

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