74AHC245; 74AHCT245

Octal bus transceiver; 3-state

The 74AHC245; 74AHCT245 is an 8-bit transceiver with 3-state outputs. The device features an output enable (OE) and send/receive (DIR) for direction control. A HIGH on OE causes the outputs to assume a high-impedance OFF-state. 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
Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
Input levels:
- For 74AHC245: CMOS level
- For 74AHCT245: TTL level
ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC(A) (V)	V_CC(B) (V)	Logic switching levels	Output drive capability (mA)	t_pd (ns)	Nr of bits	f_max (MHz)	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	R_th(j-c) (K/W)	Package name
74AHC245BQ	Production	n.a.	n.a.	CMOS	± 8	3.5	8	60	low	-40~125	75	47	DHVQFN20
74AHC245D	Production	n.a.	n.a.	CMOS	± 8	3.5	8	60	low	-40~125	83	59	SO20
74AHC245PW	Production	n.a.	n.a.	CMOS	± 8	3.5	8	60	low	-40~125	99	43.3	TSSOP20
74AHCT245APW	Production	n.a.	n.a.	TTL	± 8	3.0	8	60	low	-40~125	101	45	TSSOP20
74AHCT245BQ	Production	n.a.	n.a.	TTL	± 8	5.0	8	60	low	-40~125	75	47	DHVQFN20
74AHCT245D	Production	n.a.	n.a.	TTL	± 8	5.0	8	60	low	-40~125	83	59	SO20
74AHCT245PW	Production	n.a.	n.a.	TTL	± 8	5.0	8	60	low	-40~125	99	43.3	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74AHC245BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHC245	74AHC245BQ,115 ( 9352 891 07115 )
74AHC245D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHC245D	74AHC245D,118 ( 9352 620 03118 )
74AHC245PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHC245	74AHC245PW,118 ( 9352 620 05118 )
74AHCT245APW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHT245A	74AHCT245APWJ ( 9353 078 76118 )
74AHCT245BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHCT245	74AHCT245BQ,115 ( 9352 891 08115 )
74AHCT245D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHCT245D	74AHCT245D,118 ( 9352 619 60118 )
74AHCT245PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHCT245	74AHCT245PW,118 ( 9352 619 62118 )

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))
74AHC245D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_112	Withdrawn / End-of-life	74AHC245D	74AHC245D,112 ( 9352 620 03112 )
74AHCT245D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_112	Withdrawn / End-of-life	74AHCT245D	74AHCT245D,112 ( 9352 619 60112 )
74AHCT245PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_112	Withdrawn / End-of-life	AHCT245	74AHCT245PW,112 ( 9352 619 62112 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product
74AHC245D	935262003112	2021-12-31	2022-06-30	74AHC245D
74AHC245PW	935262005112	2021-12-31	2022-06-30	74AHC245PW
74AHCT245D	935261960112	2021-12-31	2022-06-30	74AHCT245D
74AHCT245PW	935261962112	2021-12-31	2022-06-30	74AHCT245PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74AHC245BQ	74AHC245BQ,115	74AHC245BQ	Always Pb-free
74AHC245D	74AHC245D,118	74AHC245D	week 30, 2004
74AHC245PW	74AHC245PW,118	74AHC245PW	week 7, 2005
74AHCT245APW	74AHCT245APWJ	74AHCT245APW	Always Pb-free
74AHCT245BQ	74AHCT245BQ,115	74AHCT245BQ	Always Pb-free
74AHCT245D	74AHCT245D,118	74AHCT245D	week 30, 2004
74AHCT245PW	74AHCT245PW,118	74AHCT245PW	week 7, 2005

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

Type number	Orderable part number	Chemical content	Leadfree conversion date
74AHC245D	74AHC245D,112	74AHC245D	week 30, 2004
74AHCT245D	74AHCT245D,112	74AHCT245D	week 30, 2004
74AHCT245PW	74AHCT245PW,112	74AHCT245PW	week 7, 2005

Quality and reliability disclaimer

Documentation (8)

File name	Title	Type	Date
74AHC_AHCT245	Octal bus transceiver; 3-state	Data sheet	2023-09-21
ahct245	ahct245 IBIS model	IBIS model	2013-04-07
ahc245	ahc245 IBIS model	IBIS model	2013-04-07
SOT764-1	plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 20 terminals; 0.5 mm pitch; 4.5 mm x 2.5 mm x 1 mm body	Package information	2022-06-21
SSOP-TSSOP-VSO-WAVE	Footprint for wave soldering	Wave soldering	2009-10-08
SOT360-1	plastic, thin shrink small outline package; 20 leads; 0.65 mm pitch; 6.5 mm x 4.4 mm x 1.1 mm body	Package information	2022-06-21
SOT163-1	plastic, small outline package; 20 leads; 1.27 mm pitch; 12.8 mm x 7.5 mm x 2.65 mm body	Package information	2022-06-20
WAVE_BG-BD-1	Wave soldering profile	Wave soldering	2021-09-08

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Models

File name	Title	Type	Date
ahct245	ahct245 IBIS model	IBIS model	2013-04-07
ahc245	ahc245 IBIS model	IBIS model	2013-04-07

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