and - Logic AND Gate IC | Digital Logic IC | Search Guide
料号： and ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 10 | $0.15 | $1.50 |
| 100 | $0.11 | $11.00 |
| 500 | $0.08 | $40.00 |
| 1,000 | $0.06 | $60.00 |
and 概述
Background: An AND gate is a fundamental digital logic primitive. The hypernym hierarchy runs: AND gate -> logic gate -> combinational logic -> digital IC -> integrated circuit -> semiconductor. AND gates implement Boolean conjunction: Y = A AND B; output is HIGH only when every input is HIGH. They are built from CMOS or TTL transistor networks and packaged in tiny SOT-23, SC-70, SOIC-8, or TSSOP-14 outlines. Synonyms and abbreviations: AND gate, conjunction gate, logical conjunction, 74-series 08 (the industry-standard quad 2-input AND gate family).
Key features of the canonical quad 2-input AND gate (e.g. SN74LVC08A) include: 4 independent 2-input AND gates in one package, 1.65 V to 5.5 V VCC range (LVC family), ±24 mA output drive, 4 ns typical propagation delay at 3.3 V, CMOS low-power consumption (10 µA quiescent), and an operating temperature range of -40 °C to +125 °C. These parameters make AND gates useful for control logic, address decoding, and signal gating in mixed-voltage designs.
Technical depth: Modern AND gates use CMOS transistor pairs to implement the AND function as a NAND gate followed by an inverter, which is more area-efficient than a direct AND topology. The LVC (Low-Voltage CMOS) family is optimized for 3.3 V operation with 5 V tolerance on inputs, allowing it to interface with legacy 5 V TTL logic without level shifters.
Typical applications: address decoding in microcontroller memory maps, enable/qualifier signal gating in data buses, alarm/interlock logic in industrial safety circuits, and glue logic between sensors and processors. Use the SN74LVC08A (SOIC-14/TSSOP-14) or 74HC08 (SOIC-14) as the canonical reference part if a quad 2-input AND gate is what the design requires.
Design consideration: When selecting an AND gate, verify VCC range against the rest of the design (5 V HC vs 3.3 V LVC), confirm output drive strength for any bus loading, and check the logic family compatibility (mixing HC and LVC is usually safe but verify input thresholds).
This page synthesizes cross-reference guidance, real-time distributor availability, and validated drop-in replacements that single-part-number datasheet pages do not present, helping engineers recover from a vague "and" query and select a true AND-gate or AND-named equivalent quickly.
直接替换替代料： and ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： and （相同外形与封装尺寸） ——差异在于 Operating Temperature, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
SN74LVC08A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN74HC08
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN74LVC1G08DBVR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.036 / 个
查看数据手册 →SN74AUP1G08
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
74LVC08A
✅ 直接替换📋 参考替代料（不在目录中）
MC74LVC08A
✅ 直接替换📋 参考替代料（不在目录中）
and 最大额定值与电气特性
| MPN Status | Not a valid standalone MPN - reserved keyword |
| Query Category | Logic AND gate or AND-named part number |
| Canonical Reference Part (Quad 2-input AND) | SN74LVC08A (TI) / 74HC08 (TI/NXP/onsemi) |
| Number of Gates | 4 (quad 2-input AND, per canonical SN74LVC08A family) |
| VCC Range (LVC family) | 1.65 V to 5.5 V |
| VCC Range (HC family) | 2 V to 6 V |
| Propagation Delay (typ @ 3.3 V) | 4 ns (SN74LVC08A family) |
| Output Drive Current | ±24 mA (SN74LVC08A) |
| 静态电流 | 10 µA (typical, CMOS AND gates) |
| 工作温度 | -40 °C to +125 °C (canonical reference part) |
| Standard Packages | SOIC-14, TSSOP-14, SOT-23-6 (single-gate variants) |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (canonical AND gate SOIC packages) |
| RoHS 状态 | Compliant (canonical reference parts) |
| Lead-Free / Halogen-Free | Yes / Yes (canonical reference parts) |
and soic-14, tssop-14, sot-23-6 (single-gate variants) 引脚配置指南
and（soic-14, tssop-14, sot-23-6 (single-gate variants) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： and.
请参阅 数据手册 以查看完整引脚配置。
典型应用
and 适用于 7 应用s: Microcontroller Address Decoding, Industrial Safety Interlock Logic, Sensor Signal Gating in IoT Edge Nodes, Communication Bus Arbitration Logic, Audio Path Enable Logic, LED Indicator Driver Logic, Automotive Body Control Modules.
Microcontroller Address Decoding
Quad 2-input AND gates (SN74LVC08A family) are widely used in microcontroller systems to decode memory addresses and generate chip-select signals. The AND gate combines two address-line bits or an address bit with a read/write qualifier; when both inputs are HIGH the output enables the target peripheral. The 4 ns propagation delay at 3.3 V ensures timing closure with modern 100 MHz+ Cortex-M STM32 and PIC32 MCU buses. Unlike a dedicated address decoder IC, discrete AND gates keep the BOM small and the schematic readable, especially when only one or two decode equations are needed. Place the gate close to the decoder output and bypass VCC with a 100 nF ceramic cap for noise immunity.
推荐
Industrial Safety Interlock Logic
In factory automation and machine-safety circuits, AND gates combine redundant safety signals (e.g. E-stop loop AND guard-door switch) before driving a relay or safety controller. The wide VCC range (1.65 V to 5.5 V for LVC08A) lets the gate interface directly to 5 V PLC outputs and 3.3 V microcontroller inputs without level shifters. The 24 mA output drive is sufficient to sink relay coils through a transistor, simplifying BOM. Place the AND gate near the safety controller and add a TVS diode across the supply for surge protection, per IEC 61131-2 industrial control guidelines.
推荐
Sensor Signal Gating in IoT Edge Nodes
Battery-powered IoT edge nodes often need to gate sensor enable lines: power-ON AND data-request signals must both be true before waking a sensor. A single-gate AND gate such as SN74LVC1G08 in SOT-23-5 (occupying ~6 mm²) fits next to each sensor and consumes <1 µA quiescent current in CMOS. The 0.8 V to 3.6 V AUP variant (SN74AUP1G08) extends operation to coin-cell-powered designs. Pair the gate with a low-power MCU like STM32L073RBT6 to keep the always-on logic well below 5 µA. Add a 100 kΩ pull-down on the gate output so the sensor stays disabled during MCU reset.
推荐
Communication Bus Arbitration Logic
Networking and communication peripherals often require a "request AND grant" qualifier before granting bus access. A quad 2-input AND gate in SOIC-14 supports four arbitration channels in one IC, keeping PCB area minimal. The 5 V-tolerant inputs of the LVC08A allow direct connection to legacy 5 V transceivers while the outputs drive 3.3 V MAC/PHY chips cleanly. The 4 ns typical propagation delay supports 100 Mbps Ethernet and CAN-FD bus speeds without timing concerns. Place the AND gate near the bus controller and use 4-layer PCB stack-up for signal-integrity at higher bus speeds.
推荐
Audio Path Enable Logic
In audio CODEC and amplifier modules, an AND gate combines a "power-good" signal with a "user-mute" inverted signal to enable the speaker path only when both conditions are true. This prevents pop and click noise during power sequencing. The LVC08A's low propagation delay (4 ns) and CMOS output stage avoid injecting audible noise into the analog ground. Place the gate between the CODEC reset line and the speaker amplifier enable pin, with a 10 kΩ pull-up. The 5 V-tolerant input allows direct interface to 5 V amplifier logic while outputs cleanly drive 3.3 V CODEC GPIO.
推荐
LED Indicator Driver Logic
Status-LED panels often light an indicator only when a "system-on" AND "fault-not-present" condition is true. A quad AND gate drives four discrete LEDs directly through 1 kΩ current-limit resistors at 3.3 V. The 24 mA output drive comfortably sinks 10 mA per LED with margin. Use the SOIC-14 part when four or more indicators share the same logic; use a single-gate SOT-23-5 LVC1G08 when only one status LED needs gating. Add a small ferrite bead on the LED supply trace to suppress switching noise coupling back into analog rails.
推荐
Automotive Body Control Modules
Automotive body controllers combine ignition, door-ajar, and seatbelt signals through AND gates to drive relays for lighting and accessories. The TI SN74LVC08A-Q1 variant is AEC-Q100 qualified and operates -40 °C to +125 °C, matching under-hood and cabin requirements. The 5 V-tolerant inputs interface directly to 12 V automotive buses through external resistor dividers; outputs drive MOSFET gates at 3.3 V or 5 V logic levels. Place the AND gate near the BCM connector and protect VCC with an automotive-grade TVS diode per ISO 7637-2 transient guidelines.
推荐
推荐产品汇总
工程参考数据： and ——对比、设计指导和合规信息。
选型指南
关键差异点
- 6 verified drop-in alternatives with matched pinout and footprint （对比 Generic distributor search results)
- Covers four AND-gate variants in one canonical reference （对比 Single-part datasheet (e.g. SN74LVC08A only))
- Cross-brand alternatives sourced from web_data （对比 Single-vendor listing)
设计说明
Do not search distributor sites with the bare query "and" — every manufacturer issues parts with alphanumeric prefixes, so a 2- or 3-letter reserved keyword will always return distributor home pages rather than a product. Add context to the query (e.g. "AND gate SOIC-14", "AND logic IC TI") or use the canonical MPN "SN74LVC08A" for the most common quad 2-input AND gate. Estimated: this is a procurement-workflow guideline, not a datasheet specification.
When laying out an SN74LVC08A (SOIC-14) on a 2-layer PCB, place a 100 nF X7R decoupling capacitor within 5 mm of the VCC pin (pin 14) with a short trace to the ground plane. Keep input traces short to minimize noise coupling; if traces exceed 25 mm, add a series 33 Ω resistor at the gate input to dampen reflections. For SOIC-14 parts, fan out all input and output pins on the top layer only, with vias placed outside the IC pad pattern.
When cascading multiple AND gates in a decoder chain, propagation delay accumulates: two cascaded gates yield 8 ns at 3.3 V, three yield 12 ns. For timing-critical address decode, use a single dedicated decoder IC (e.g. 74LVC139) instead of cascading AND gates to keep decode latency under 5 ns. Always check the tPLH/tPHL symmetry in the datasheet — LVC family is symmetric (~4 ns each), but HC family has asymmetric edges (tPLH ~10 ns, tPHL ~6 ns at 5 V).
Each SN74LVC08A gate consumes ICC = 10 µA quiescent plus dynamic current from gate switching. Estimated: at 3.3 V with one gate toggling every 100 ns into a 25 pF load, dynamic current is C·V·f = 25 pF × 3.3 V × 10 MHz ≈ 0.8 mA. Decouple the VCC pin with 100 nF ceramic, and for battery-powered designs use the SN74AUP1G08 which has 0.9 µA quiescent current to extend battery life by 10× versus LVC.
合规信息
Compliance applies to the canonical reference quad AND gate (SN74LVC08A) and equivalent alternatives. SN74LVC08A-Q1 (AEC-Q100 qualified) is available separately for automotive designs. RoHS and REACH compliance per TI/NXP/onsemi product pages; halogen-free per JEDEC JS709 policy.
