SN74AHC3G99-Q1 - Triple Configurable Logic Gate AEC-Q100 | TI
料号： SN74AHC3G99-Q1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.56 | $5.60 |
| 100 | $0.44 | $44.00 |
| 500 | $0.36 | $180.00 |
| 1,000 | $0.29 | $290.00 |
SN74AHC3G99-Q1 概述
Configurable logic gates are digital ICs that let a single device implement multiple Boolean functions - MUX, AND, OR, NAND, NOR, XOR, XNOR - depending on input connections. They belong to the standard logic gate family within digital ICs, the fundamental building blocks of digital electronics. Integrating three such gates in one package saves board space and simplifies inventory versus discrete gates.
Key features include Schmitt-trigger inputs on every pin, which eliminate erroneous outputs caused by slow-edged or noisy input signals - critical in electrically harsh automotive systems. The 3-state outputs place pins in a high-impedance state, enabling bus sharing. Per the TI datasheet, the device drives load capacitance up to 50pF while meeting all datasheet specifications, with a typical propagation delay of 7.5ns at 5V for high-speed operation.
Technically, the device is built on TI AHC (Advanced High-Speed CMOS) technology, balancing speed with low static power consumption. Input hysteresis improves noise immunity and permits slow input transitions without false triggering, while output-enable control supports bus-oriented architectures.
Typical applications include automotive body control modules, infotainment systems, and industrial automation where multiple logic functions are required in a compact footprint. It also suits signal conditioning in mixed-voltage systems.
Design tip: keep total output load capacitance at or below 50pF to preserve full datasheet timing, and place a 0.1uF decoupling capacitor close to VCC to suppress supply noise.
直接替换替代料： SN74AHC3G99-Q1 ——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： SN74AHC3G99-Q1 （相同外形与封装尺寸） ——差异在于 Logic Function, Supply Voltage Range, Input Type, Inputs per Gate, Number of Gates.
快速对比工具——选择替代料号进行并排对比：
SN74AHC3G99
✅ 直接替换📋 参考替代料（不在目录中）
SN74AHCT3G99-Q1
✅ 直接替换✓ 有现货
$0.38 / 个
查看数据手册 →SN74AHCT3G99QPWRQ1
✅ 直接替换📋 参考替代料（不在目录中）
SN74LV3T99-Q1
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.41 / 个
查看数据手册 →SN74AHC3G99-Q1 最大额定值与电气特性
| Logic Function | Y = (A • C + B • C) ⊕ D, configurable (MUX, AND, OR, NAND, NOR, XOR, XNOR) |
| Number of Gates | 3 |
| Inputs per Gate | 4 (12 total) |
| 输出类型 | 3-state |
| Supply Voltage Range | 2 V to 5.5 V |
| Input Type | Schmitt-trigger |
| Maximum Load Capacitance | 50 pF (per datasheet recommendations) |
| Propagation Delay | 7.5 ns typ at 5 V |
| Technology Family | AHC (Advanced High-Speed CMOS) |
| 封装 | 20-TSSOP (PW) |
| 安装类型 | Surface Mount |
| Automotive Qualification | AEC-Q100 qualified |
| 工作温度 | -40C to +125C |
| RoHS 状态 | Compliant |
| 生命周期状态 | Active |
SN74AHC3G99-Q1 20-tssop (pw) 引脚配置指南
SN74AHC3G99-Q1（20-tssop (pw) 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： SN74AHC3G99-Q1.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SN74AHC3G99-Q1 适用于 6 应用s: Automotive Body Control Modules, Automotive Infotainment Systems, Industrial Automation and PLC I/O, Motor Drive Control Logic, Mixed-Voltage Signal Conditioning, Networking and Communication Backplanes.
Automotive Body Control Modules
Body control modules combine many switch inputs, lamp drivers, and communication lines in an electrically noisy 12V vehicle environment. The SN74AHC3G99-Q1 fits because its Schmitt-trigger inputs reject slow edges from relay-adjacent wiring and its 3-state outputs enable shared status buses. Operating from a 2V-5.5V regulated rail with AEC-Q100 qualification across -40C to +125C, one 20-pin package implements MUX, XOR, or AND functions for interlock and diagnostics logic, reducing BOM count versus three discrete gates while guaranteeing automotive-grade reliability.
推荐
Automotive Infotainment Systems
Infotainment head units mix audio, display, and communication domains where glue logic routes enables, interrupts, and mode-select signals. The SN74AHC3G99-Q1 suits these boards because each configurable gate can be tailored in layout as a MUX or XOR without changing the IC, and the 3-state outputs let multiple sources drive shared control lines. Its 7.5ns typical propagation delay at 5V keeps timing margins safe for processor GPIO handshaking, while AEC-Q100 qualification covers the elevated cabin temperatures and 3.3V/5V mixed rails typical of these designs.
推荐
Industrial Automation and PLC I/O
PLC I/O cards need robust glue logic between field-side isolators and the controller. The SN74AHC3G99-Q1 provides three reconfigurable gates whose Schmitt-trigger inputs tolerate slow, noisy edges from optocoupler outputs, and 3-state outputs support shared backplane buses. The 2V-5.5V supply range bridges 3.3V controller logic and 5V field logic on one part, cutting inventory. Configuring functions such as NAND or XNOR by routing changes lets one approved PCB serve multiple I/O variants, shortening development cycles in modular industrial automation systems.
推荐
Motor Drive Control Logic
In motor drives, gate-enable interlocks and fault-combination logic must be fast and deterministic. The SN74AHC3G99-Q1 implements the AND/OR/XOR combinations needed for PWM enable gating and fault latching with 7.5ns typical propagation delay at 5V, ensuring faults are masked within one PWM cycle. Schmitt-trigger inputs condition noisy fault-feedback signals, and 3-state outputs allow a controller to take over shared enable lines during diagnostics. Operation to +125C matches the elevated ambient near power stages in automotive and industrial motor controllers.
推荐
Mixed-Voltage Signal Conditioning
Systems combining 3.3V MCUs with legacy 5V peripherals need level-tolerant glue logic. The SN74AHC3G99-Q1 operates from 2V to 5.5V, so the same part can sit on either rail, and its Schmitt-trigger inputs cleanly reshape slow analog-derived comparator edges before they reach the digital domain. Configurable gates form select/mode decoding between ADCs, DACs, and the processor, while 3-state outputs share status lines. Keeping loads under the specified 50pF preserves the 7.5ns typical delay, making the device a compact hub for mixed-voltage board-level conditioning.
推荐
Networking and Communication Backplanes
Line cards and backplanes use shared control and status buses where multiple cards must tri-state their drivers. The SN74AHC3G99-Q1 addresses this with 3-state outputs on all three gates, and its configurable Boolean function Y = (A • C + B • C) ⊕ D implements address decoding or parity-style checks without extra ICs. The 2V-5.5V range supports both 3.3V and 5V backplane generations, and Schmitt-trigger inputs tolerate the slow edges from long, heavily loaded backplane traces, improving noise margins in dense networking equipment.
推荐
推荐产品汇总
工程参考数据： SN74AHC3G99-Q1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | SN74AHC3G99 | SN74AHCT3G99-Q1 | SN74LV3T99-Q1 |
|---|---|---|---|---|
| Package | 20-TSSOP (PW) / 20-VSSOP (DGS) | 20-TSSOP (PW) - same footprint | 20-TSSOP (PW) - same footprint | 20-TSSOP (PW) - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Range | 2 V to 5.5 V | 2 V to 5.5 V | 4.5 V to 5.5 V (TTL) | 1.65 V to 5.5 V |
| Input Type | Schmitt-trigger (CMOS levels) | Schmitt-trigger (CMOS levels) | Schmitt-trigger (TTL levels) | Schmitt-trigger (partial) |
| AEC-Q100 Automotive Grade | Yes | No (standard grade) | Yes | Yes |
| Outputs | 3 x 3-state | 3 x 3-state | 3 x 3-state | 3 x 3-state |
| Configurable Function | Y = (A • C + B • C) ⊕ D | Same function | Same function | Same function (LV thresholds) |
关键差异点
- AEC-Q100 automotive qualification （对比 SN74AHC3G99)
- Wide 2V-5.5V CMOS input range （对比 SN74AHCT3G99-Q1)
- Three gates plus 3-state outputs in one package （对比 SN74LVC1G17QDBVRQ1)
设计说明
Keep total load capacitance on each 3-state output at or below 50pF. TI states the device meets all datasheet specifications at 50pF or less; larger capacitive loads increase propagation delay and dynamic power beyond guaranteed limits. Long backplane traces or heavily fan-out connections should be buffered before exceeding this limit.
Place a 0.1uF ceramic decoupling capacitor within 2mm of the VCC pin, plus a bulk 1uF-10uF capacitor per power domain. Unused gate inputs must never float - tie them to VCC or GND, since floating Schmitt-trigger inputs at slow edges can cause oscillatory supply current draw and elevated quiescent consumption.
Exploit the Schmitt-trigger inputs: they remove the need for external RC edge-shaping on noisy, slow-rising signals from comparators, optocouplers, or long wiring harnesses. Verify hysteresis voltage at your operating VCC using the datasheet Schmitt-trigger graphs, since hysteresis width scales with supply voltage.
合规信息
AEC-Q100 qualified per TI -Q1 designation. RoHS compliance per TI product page; REACH and halogen-free status not stated in provided data.
