74AHCT240

Octal buffer/line driver; inverting; 3-state

The 74AHCT240 is an 8-bit inverting buffer/line driver with 3-state outputs. This device can be used as two 4-bit buffers or one 8-bit buffer. It features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. Inputs are over voltage tolerant. This feature allows the use of these devices as translators in mixed voltage environments.

Features and benefits

Balanced propagation delays
All inputs have a Schmitt-trigger action
Inputs accepts voltages higher than V_CC
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
Multiple package options
Specified from -40 °C to +85 °C and from -40 °C to +125 °C

Parametrics

Type number	Product status	V_CC (V)	Logic switching levels	Output drive capability (mA)	f_max (MHz)	Nr of bits	Power dissipation considerations	T_amb (°C)	R_th(j-a) (K/W)	R_th(j-c) (K/W)	Package name
74AHCT240BQ	Production	4.5 - 5.5	TTL	± 8	60	8	low	-40~125	78	50	DHVQFN20
74AHCT240D	Production	4.5 - 5.5	TTL	± 8	60	8	low	-40~125	85	61	SO20
74AHCT240PW	Production	4.5 - 5.5	TTL	± 8	60	8	low	-40~125	100	44.6	TSSOP20

Package

Type number	Package	Package information	Reflow-/Wave soldering	Packing	Status	Marking	Orderable part number, (Ordering code (12NC))
74AHCT240BQ	DHVQFN20 (SOT764-1)	SOT764-1		SOT764-1_115	Active	AHCT240	74AHCT240BQ,115 ( 9352 826 27115 )
74AHCT240D	SO20 (SOT163-1)	SOT163-1	WAVE_BG-BD-1	SOT163-1_118	Active	74AHCT240D	74AHCT240D,118 ( 9352 826 28118 )
74AHCT240PW	TSSOP20 (SOT360-1)	SOT360-1	SSOP-TSSOP-VSO-WAVE	SOT360-1_118	Active	AHCT240	74AHCT240PW,118 ( 9352 826 29118 )

Discontinuation information

Type number	Orderable part number, (Ordering code (12NC))	Last time buy date	Last time delivery date	Replacement product	Status	Comments
74AHCT240D	935282628112	2018-12-31	2019-06-30	74AHCT240D
74AHCT240PW	935282629112	2021-12-31	2022-06-30	74AHCT240PW

Environmental information

Type number	Orderable part number	Chemical content	Leadfree conversion date
74AHCT240BQ	74AHCT240BQ,115	74AHCT240BQ	Always Pb-free
74AHCT240D	74AHCT240D,118	74AHCT240D	Always Pb-free
74AHCT240PW	74AHCT240PW,118	74AHCT240PW	Always Pb-free

Quality and reliability disclaimer

Documentation (8)

File name	Title	Type	Date
74AHCT240	Octal buffer/line driver; inverting; 3-state	Data sheet	2023-10-03
ahct240	ahct240 IBIS model	IBIS model	2013-04-07
Nexperia_Selection_guide_2023	Nexperia Selection Guide 2023	Selection guide	2023-05-10
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

Support

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Models

File name	Title	Type	Date
ahct240	ahct240 IBIS model	IBIS model	2013-04-07

Ordering, pricing & availability

Sample

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