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74HC240


Part Number 74HC240
Manufacturer Texas Instruments
Title High-Speed CMOS Logic Octal Buffer/Line Drivers
Description The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non...
Features
• HC/HCT240 Inverting
• HC/HCT241 Non-inverting
• HC/HCT244 Non-inverting
• Typical propagation delay = 8ns at VCC = 5 V, CL = 15 pF, TA = 25℃ for HC240
• Three-state outputs
• Buffered inputs
• High-current bus driver outputs
• Fanout (over temperature range)
  – Standard outputs: 10 LSTTL loads
  – Bu...

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74HC240 : 74HC/HCT240 The 74HC/HCT240 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT240 are octal inverting buffer/line drivers with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high impedance OFF-state. The “240” is identical to the “244” but has inverting outputs. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH PARAMETER propagation delay 1An to 1Yn; 2An to 2Yn input capacitance power dissipation capacitance per buffer notes 1 and 2 CONDITIONS HC.

74HC240 : The 74HC240; 74HCT240 is an 8-bit inverting buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device 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 include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits • Wide supply voltage range from 2.0 V to 6.0 V • CMOS low power dissipation • High noise immunity • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B • Complies with JEDEC standards: • JESD8C (2.7 V to 3.6 V.

74HC240-Q100 : The 74HC240-Q100; 74HCT240-Q100 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). The 74HC240-Q100; 74HCT240-Q100 is a dual octal inverting buffer/line driver with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high impedance OFF-state. This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications. 2. Features and benefits • Automotive product qualification in accordance with AEC-Q100 (Grade 1) • Specified from -40 °C to +85 °C and from -40 °C to +125 °C • Wide supply v.

74HC240D : • Octal Bus Buffer 74HC240D: INVERTED, 3-STATE OUTPUTS 74HC244D: NON-INVERTED, 3-STATE OUTPUTS 2. General The 74HC240D and 74HC244D are high speed CMOS OCTAL BUS BUFFERs fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The 74HC240D is an inverting 3-state buffer and the 74HC244D are non-inverting 3-state buffers having two active-low output enables. These devices are designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge or transient excess voltage. 3. Features (1) Wide operating temperature range: T.

74HC240D : The 74HC240; 74HCT240 is an 8-bit inverting buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device 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 include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits • Wide supply voltage range from 2.0 V to 6.0 V • CMOS low power dissipation • High noise immunity • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B • Complies with JEDEC standards: • JESD8C (2.7 V to 3.6 V.

74HC241 : The 74HC241; 74HCT241 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on 1OE or LOW on 2OE causes the associated outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. The 74HCT241 device features reduced input threshold levels to allow interfacing to TTL logic levels. 2. Features and benefits • Wide supply voltage range from 2.0 to 6.0 V • CMOS low power dissipation • High noise immunity • Latch-u.

74HC241 : The M54/74HC240, HC241 and HC244 are high speed CMOS OCTAL BUS BUFFERs fabricated in silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. The designer has a choise of select combination of inverting and non-inverting outputs, symmetrical G (active low output control) input, and PIN CONNECTION (top view) HC240 HC241 HC244 . . B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R complementary G and G inputs. Each control input governs four BUS BUFFERs. These devices are designed to be used with 3 state memory .

74HC241 : The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non-inverting three-state buffers that differ only in that the 241 has one active-high and one active-low output enable, and the 244 has two active-low output enables. All three types have identical pinouts. PART NUMBER CD74HC240 CD54HC240 CD74HCT240 CD54HCT240 CD74HC241 CD74HCT241 CD54HCT241 CD74HC244 CD54HC244 CD74HCT244 CD54HCT244 Package Information PACKAGE(1) BODY SIZE (NOM) M (SOIC, 20) 12.80 mm × 7.50 mm E (PDIP, 20) 25.40 mm × 6.35 mm F (CDIP, 20) 26.92 mm × 6.92 mm M (SOIC, 20) 12.80 mm × 7.50 mm E (PDIP, 20) 25.40 mm × 6.35 mm .

74HC241D : The 74HC241; 74HCT241 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on 1OE or LOW on 2OE causes the associated outputs to assume a high-impedance OFF-state. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. The 74HCT241 device features reduced input threshold levels to allow interfacing to TTL logic levels. 2. Features and benefits • Wide supply voltage range from 2.0 to 6.0 V • CMOS low power dissipation • High noise immunity • Latch-u.

74HC242 : The 74HC/HCT242 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL 74HC/HCT242 (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT242 are quad bus transceivers featuring inverting 3-state bus compatible outputs in both send and receive directions. They are designed for 4-line asynchronous 2-way data communications between data buses. The output enable inputs (OEA and OEB) can be used to isolate the buses. The “242” is similar to the “243” but has inverting outputs. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH PARAMETER propagation delay An to Bn; Bn to An input capacitance input/ou.

74HC243 : The 74HC/HCT243 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. 74HC/HCT243 The 74HC/HCT243 are quad bus transceivers featuring non-inverting 3-state bus compatible outputs in both send and receive directions. They are designed for 4-line asynchronous 2-way data communications between data buses. The output enable inputs (OEA and OEB) can be used to isolate the buses. The “243” is similar to the “242” but has non-inverting (true) outputs. QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH PARAMETER propagation delay An to Bn; Bn to An input capaci.

74HC244 : The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device 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 include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits • Wide supply voltage range from 2.0 to 6.0 V • CMOS low power dissipation • High noise immunity • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B • Input levels: • For 74HC244: CMOS level • For 74HCT244: TTL level • O.

74HC244 : The 74HC244; 74HCT244 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device 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 include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC. 2. Features and benefits  Input levels:  For 74HC244: CMOS level  For 74HCT244: TTL level  Octal bus interface  Non-inverting 3-state outputs  Complies with JEDEC standard no. 7 A  ESD protection:  HBM JESD22-A114F exceeds 2000 V  MM JESD22-A115-A exc.

74HC244 : The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non-inverting three-state buffers that differ only in that the 241 has one active-high and one active-low output enable, and the 244 has two active-low output enables. All three types have identical pinouts. PART NUMBER CD74HC240 CD54HC240 CD74HCT240 CD54HCT240 CD74HC241 CD74HCT241 CD54HCT241 CD74HC244 CD54HC244 CD74HCT244 CD54HCT244 Package Information PACKAGE(1) BODY SIZE (NOM) M (SOIC, 20) 12.80 mm × 7.50 mm E (PDIP, 20) 25.40 mm × 6.35 mm F (CDIP, 20) 26.92 mm × 6.92 mm M (SOIC, 20) 12.80 mm × 7.50 mm E (PDIP, 20) 25.40 mm × 6.35 mm .

74HC244 : The SNx4HC244 octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HC244 devices are organized as two 4bit buffers and drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the highimpedance state. Device Information PART NUMBER PACKAGE (PINS)(1) BODY SIZE (NOM) CDIP (20) 6.92 mm × 24.38 mm SN54HC244 CFP (20) 6.92 mm × 13.72 mm LCCC (20) 8.89 mm × 8.89 mm SN74HC244DB SSOP (20) 5.30 mm × 7.25 mm SN74HC244DW SOIC (20.

74HC244-Q100 : The 74HC244-Q100; 74HCT244-Q100 is an 8-bit buffer/line driver with 3-state outputs. The device can be used as two 4-bit buffers or one 8-bit buffer. The device 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 include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC. This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications. 2. Features and benefits • Automotive product qualification in accordance with AEC-Q100 (Grade 1) .




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