74AHC595; 74AHCT595

8-bit serial-in/serial-out or parallel-out shift register with output latches

The 74AHC595; 74AHCT595 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 (DS) and a serial output (Q7S) to enable cascading and an asynchronous reset MR input. A LOW on MR will reset the shift register. Data is shifted on the LOW-to-HIGH transitions of the SHCP input. 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. Data in the storage register appears at the output whenever the output enable input (OE) is LOW. A HIGH 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. The 74AHCT595 features TTL compatible inputs. Both 74AHC595 and 74AHCT595 inputs are overvoltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

Features and benefits

Wide supply voltage range from 2.0 V to 5.5 V
Balanced propagation delays
All inputs have Schmitt-trigger action
Overvoltage tolerant inputs to 5.5 V
High noise immunity
CMOS low power dissipation
Input levels:
- The 74AHC595 operates with CMOS input levels
- The 74AHCT595 operates with TTL input levels
ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
Multiple package options
Specified from -40 °C to +85 °C and from -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
74AHC595BQ	Production	2.0 - 5.5	CMOS	± 8	4.0	170	8	low	-40~125	90	11.8	59	DHVQFN16
74AHC595D	Production	2.0 - 5.5	CMOS	± 8	4.0	170	8	low	-40~125	90	8.3	49	SO16
74AHC595PW	Production	2.0 - 5.5	CMOS	± 8	4.0	170	8	low	-40~125	122	3.9	51.4	TSSOP16
74AHCT595BQ	Production	4.5 - 5.5	TTL	± 8	3.8	170	8	low	-40~125	90	11.8	59	DHVQFN16
74AHCT595D	Production	4.5 - 5.5	TTL	± 8	3.8	170	8	low	-40~125	90	8.3	49	SO16
74AHCT595PW	Production	4.5 - 5.5	TTL	± 8	3.8	170	8	low	-40~125	122	3.9	51.4	TSSOP16

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74AHC595BQ	DHVQFN16 (SOT763-1)	SOT763-1		SOT763-1_115	Active	AHC595	74AHC595BQ,115 ( 9352 816 21115 )
74AHC595D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_118	Active	74AHC595D	74AHC595D,118 ( 9352 655 67118 )
74AHC595PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_118	Active	AHC595	74AHC595PW,118 ( 9352 655 68118 )
74AHCT595BQ	DHVQFN16 (SOT763-1)	SOT763-1		SOT763-1_115	Active	AHT595	74AHCT595BQ,115 ( 9352 895 63115 )
74AHCT595D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_118	Active	74AHCT595D	74AHCT595D,118 ( 9352 655 59118 )
74AHCT595PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_118	Active	AHCT595	74AHCT595PW,118 ( 9352 655 60118 )

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))
74AHCT595D	SO16 (SOT109-1)	SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE	SOT109-1_112	Withdrawn / End-of-life	74AHCT595D	74AHCT595D,112 ( 9352 655 59112 )
74AHCT595PW	TSSOP16 (SOT403-1)	SOT403-1	SSOP-TSSOP-VSO-WAVE	SOT403-1_112	Withdrawn / End-of-life	AHCT595	74AHCT595PW,112 ( 9352 655 60112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74AHC595D	935265567112	2021-12-31	2022-06-30	74AHC595D
74AHC595PW	935265568112	2018-12-31	2019-06-30	74AHC595PW
74AHCT595D	935265559112	2021-12-31	2022-06-30	74AHCT595D
74AHCT595PW	935265560112	2021-12-31	2022-06-30	74AHCT595PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74AHC595BQ	74AHC595BQ,115	74AHC595BQ	Always Pb-free
74AHC595D	74AHC595D,118	74AHC595D	week 35, 2004
74AHC595PW	74AHC595PW,118	74AHC595PW	week 10, 2005
74AHCT595BQ	74AHCT595BQ,115	74AHCT595BQ	Always Pb-free
74AHCT595D	74AHCT595D,118	74AHCT595D	week 35, 2004
74AHCT595PW	74AHCT595PW,118	74AHCT595PW	week 10, 2005

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
74AHCT595D	74AHCT595D,112	74AHCT595D			week 35, 2004
74AHCT595PW	74AHCT595PW,112	74AHCT595PW			week 10, 2005

Quality and reliability disclaimer

Documentation (10)

File name	Title	Type	Date
74AHC_AHCT595	8-bit serial-in/serial-out or parallel-out shift register with output latches	Data sheet	2024-03-07
ahct595	ahct595 IBIS model	IBIS model	2013-04-07
ahc595	ahc595 IBIS model	IBIS model	2013-04-07
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
ahct595	ahct595 IBIS model	IBIS model	2013-04-07
ahc595	ahc595 IBIS model	IBIS model	2013-04-07

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