사양
| 속성 | 가치 |
| Supplier | Texas Instruments |
| Package / Case | Tube |
| Series | 74LVC |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High Low | 24mA, 24mA |
| Voltage - Supply | 1.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
개요
Description
SN74LVC244ADW is an octal buffer/driver with 3-state outputs from TI’s LVC family.
- Function: 8 non-inverting buffers (A1–A8 → Y1–Y8) in two four-bit sections with independent active-low enables (G1, G2).
- 3-state outputs: When the corresponding Gx is low, outputs drive; when high, outputs are high-impedance for bus-sharing.
- Voltage and levels: Vcc typically 1.65–3.6 V; CMOS input thresholds compatible with standard TTL/CMOS signals.
- Performance: Fast CMOS transitions with low static power; suitable for moderate fan-out on data/bus lines.
- Packaging: DW suffix denotes a specific TI package option (small-outline variants); see datasheet for exact options.
- Applications: Bus buffering, data path isolation, and level-ready buffering between digital devices.
- Tips: Tie G1/G2 low for always-on buffering, or use them to tri-state sections as needed.
For exact electrical specs, recommended operating conditions, and package options, consult the TI SN74LVC244A/DW datasheet.
- Function: 8 non-inverting buffers (A1–A8 → Y1–Y8) in two four-bit sections with independent active-low enables (G1, G2).
- 3-state outputs: When the corresponding Gx is low, outputs drive; when high, outputs are high-impedance for bus-sharing.
- Voltage and levels: Vcc typically 1.65–3.6 V; CMOS input thresholds compatible with standard TTL/CMOS signals.
- Performance: Fast CMOS transitions with low static power; suitable for moderate fan-out on data/bus lines.
- Packaging: DW suffix denotes a specific TI package option (small-outline variants); see datasheet for exact options.
- Applications: Bus buffering, data path isolation, and level-ready buffering between digital devices.
- Tips: Tie G1/G2 low for always-on buffering, or use them to tri-state sections as needed.
For exact electrical specs, recommended operating conditions, and package options, consult the TI SN74LVC244A/DW datasheet.
Equivalent
Equivalent products (same function: 8‑bit octal buffer/driver with two 3‑state enables in LVC family). Direct cross‑refs include: 74LVC244A from Nexperia (Philips), and similar 74LVC244A variants from other vendors such as On Semiconductor and Renesas. Ensure matching Vcc (1.65–3.6 V), package, and OE pinout for a proper cross-reference.
Features
SN74LVC244ADW features:
- Octal buffer/line driver with 3-state outputs
- A1–A4 to Y1–Y4 and A5–A8 to Y5–Y8 (two 4-bit buffers)
- Independent active-low output enables (/OE1, /OE2) for each group
- Non-inverting data path (A inputs drive Y outputs)
- Vcc = 1.65 V to 3.6 V (LVC family), suitable for 3.3 V/2.5 V logic
- High-speed CMOS with low static/dynamic power
- 3-state outputs allow bus sharing and multi-device interfacing
- ESD protection (typical) suitable for handling typical board environments
- Available in DW package variants (surface-mount)
Typical uses: bus driving, buffering data/address lines, memory/peripheral interfacing, depth buffering on microprocessor/data buses.
- Octal buffer/line driver with 3-state outputs
- A1–A4 to Y1–Y4 and A5–A8 to Y5–Y8 (two 4-bit buffers)
- Independent active-low output enables (/OE1, /OE2) for each group
- Non-inverting data path (A inputs drive Y outputs)
- Vcc = 1.65 V to 3.6 V (LVC family), suitable for 3.3 V/2.5 V logic
- High-speed CMOS with low static/dynamic power
- 3-state outputs allow bus sharing and multi-device interfacing
- ESD protection (typical) suitable for handling typical board environments
- Available in DW package variants (surface-mount)
Typical uses: bus driving, buffering data/address lines, memory/peripheral interfacing, depth buffering on microprocessor/data buses.
Pinout
- Pin count: 20 pins (20-pin package)
- Function: SN74LVC244ADW is an octal buffer/line driver with 3-state outputs. It provides eight data I/O lines (A1–A8 to Y1–Y8) in two 4-bit groups, each with its own active-low output-enable (1G and 2G) for tri-state operation and bus buffering.
- Function: SN74LVC244ADW is an octal buffer/line driver with 3-state outputs. It provides eight data I/O lines (A1–A8 to Y1–Y8) in two 4-bit groups, each with its own active-low output-enable (1G and 2G) for tri-state operation and bus buffering.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital integrated circuits and embedded processing products; one of the world’s largest semiconductor producers.
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital integrated circuits and embedded processing products; one of the world’s largest semiconductor producers.
Application
SN74LVC244ADW is an 8-bit buffer/line driver with two 4-bit sections and tri-state outputs. Common applications:
- Buffering/level-shifting data or address buses between a microcontroller/CPU and memory or peripherals (3.3 V ↔ 5 V).
- High-speed bus driving with separate OE controls (two 4-bit enables) for multi-device bus sharing.
- Driving external devices (RAM, EEPROM, LCDs, ASICs) and backplanes with reduced loading.
- I/O expansion and fan-out enhancement in microprocessor-based systems.
- Bus isolation to improve signal integrity in mixed-voltage/multi-device environments.
- Buffering/level-shifting data or address buses between a microcontroller/CPU and memory or peripherals (3.3 V ↔ 5 V).
- High-speed bus driving with separate OE controls (two 4-bit enables) for multi-device bus sharing.
- Driving external devices (RAM, EEPROM, LCDs, ASICs) and backplanes with reduced loading.
- I/O expansion and fan-out enhancement in microprocessor-based systems.
- Bus isolation to improve signal integrity in mixed-voltage/multi-device environments.
Package
20-pin wide-body surface-mount package (SOIC). The “DW” suffix indicates the wide SOIC variant.
