Data Sheet
SN74AC08-Q1 汽车类四路双输入正与门
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1 特性
- 符合汽车应用要求
- 2V 至 6V VCC 运行
- 输入电压高达 6V
- tpd 最大值为 7.5ns（5V 时）
2 说明
SN74AC08 器件是四路双输入正与门。该器件以正逻辑执行布尔函数 Y = A • B 或 Y = A + B。
封装信息
| 器件型号 | 封装(1) | 封装尺寸(2) | 本体尺寸(3) |
|---|---|---|---|
| SN74AC08-Q1 | BQA（WQFN，14） | 3mm x 2.5mm | 3mm x 2.5mm |
| D（SOIC，14） | 8.65mm × 6mm | 8.65mm × 3.9mm | |
| PW（TSSOP，14） | 5mm × 6.4mm | 5mm × 4.4mm |
(1) 有关更多信息，请参阅 节 10。
(2) 封装尺寸（长 × 宽）为标称值，并包括引脚（如适用）。
(3) 本体尺寸（长 × 宽）为标称值，不包括引脚。
逻辑图，每个逻辑门（正逻辑）3 Pin Configuration and Functions
Figure 3-1 D or PW Package, 14-Pin
SOIC or TSSOP (Top View)
Figure 3-2 BQA Package, 14-Pin WQFN
(Top View)Table 3-1 Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| 1A | 1 | Input | Channel 1, Input A |
| 1B | 2 | Input | Channel 1, Input B |
| 1Y | 3 | Output | Channel 1, Output Y |
| 2A | 4 | Input | Channel 2, Input A |
| 2B | 5 | Input | Channel 2, Input B |
| 2Y | 6 | Output | Channel 2, Output Y |
| GND | 7 | — | Ground |
| 3Y | 8 | Output | Channel 3, Output Y |
| 3A | 9 | Input | Channel 3, Input A |
| 3B | 10 | Input | Channel 3, Input B |
| 4Y | 11 | Output | Channel 4, Output Y |
| 4A | 12 | Input | Channel 4, Input A |
| 4B | 13 | Input | Channel 4, Input B |
| VCC | 14 | — | Positive Supply |
| Thermal pad(2) | — | The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply. | |
(1) I = Input, O = Output, I/O =
Input or Output, G = Ground, P = Power.
(2) BQA package only.
4 Specifications
4.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise
noted)(1)
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| VCC | Supply voltage range | −0.5 | 7 | V | |
| VI (2) | Input voltage range | −0.5 | VCC + 0.5 | V | |
| VO (2) | Output voltage range | −0.5 | VCC + 0.5 | V | |
| IIK | Input clamp current | (VI < 0 or VI > VCC) | ±20 | mA | |
| IOK | Output clamp current | (VO < 0 or VO > VCC) | ±20 | mA | |
| IO | Continuous output current | (VO = 0 to VCC) | ±50 | mA | |
| Continuous current through VCC or GND | ±200 | mA | |||
| Tstg | Storage temperature range | −65 | 150 | °C |
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability
(2) The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
4.2 Recommended Operating Conditions
over recommended operating free-air temperature range (unless
otherwise noted)(1))
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| VCC | Supply voltage | 2 | 6 | V | |
| VIH | High-level input voltage | VCC = 3V | 2.1 | V | |
| VCC = 4.5V | 3.15 | ||||
| VCC = 5.5V | 3.85 | ||||
| VIL | Low-level input voltage | VCC = 3V | 0.9 | V | |
| VCC = 4.5V | 1.35 | ||||
| VCC = 5.5V | 1.65 | ||||
| VI | Input voltage | 0 | VCC | V | |
| VO | Output voltage | 0 | VCC | V | |
| IOH | High-level output current | VCC = 3V | −12 | mA | |
| VCC = 4.5V | −24 | ||||
| VCC = 5.5V | −24 | ||||
| IOL | Low-level output current | VCC = 3V | 12 | mA | |
| VCC = 4.5V | 24 | ||||
| VCC = 5.5V | 24 | ||||
| Δt/Δv | Input transition rise or fall rate | 8 | ns/V | ||
| TA | Operating free-air temperature | −40 | 125 | °C | |
(1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
4.3 Thermal Information
| THERMAL METRIC(1) | SN74AC08-Q1 | UNIT | |||
|---|---|---|---|---|---|
| BQA (WQFN) | D (SOIC) | PW (TSSOP) | |||
| 14 PINS | 14 PINS | 14 PINS | |||
| RθJA | Junction-to-ambient thermal resistance | 91.3 | 119.9 | 145.7 | °C/W |
(1) For more information about traditional and new thermal
metrics, see the IC Package Thermal Metrics.
4.4 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
| PARAMETER | TEST CONDITIONS | VCC | TA = 25°C | TA = −40°C TO 125°C | TA = −40°C TO 85°C | UNIT | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MIN | TYP | MAX | MIN | MAX | MIN | MAX | ||||||
| VOH | IOH = −50μA | 3V | 2.9 | 2.9 | 2.9 | V | ||||||
| 4.5V | 4.4 | 4.4 | 4.4 | |||||||||
| 5.5V | 5.4 | 5.4 | 5.4 | |||||||||
| IOH = −12mA | 3V | 2.56 | 2.4 | 2.46 | ||||||||
| IOH = −24mA | 4.5V | 3.86 | 3.7 | 3.76 | ||||||||
| 5.5V | 4.86 | 4.7 | 4.76 | |||||||||
| VOL | IOL = 50μA | 3V | 0.002 | 0.1 | 0.1 | 0.1 | V | |||||
| 4.5V | 0.001 | 0.1 | 0.1 | 0.1 | ||||||||
| 5.5V | 0.001 | 0.1 | 0.1 | 0.1 | ||||||||
| IOL = 12mA | 3V | 0.36 | 0.5 | 0.44 | ||||||||
| IOL = 24mA | 4.5V | 0.36 | 0.5 | 0.44 | ||||||||
| 5.5V | 0.36 | 0.5 | 0.44 | |||||||||
| II | A or B ports | VI = VCC or GND | 5.5V | ±0.1 | ±1 | ±1 | μA | |||||
| ICC | VI = VCC or GND, | IO = 0 | 5.5V | 2 | 40 | 20 | μA | |||||
| Ci | VI = VCC or GND | 5V | 4.5 | pF | ||||||||
4.5 Switching Characteristics, VCC = 3.3V ± 0.3V
over recommended operating free-air temperature range, VCC
= 3.3V ± 0.3V (unless otherwise noted) (see Load Circuit
and Voltage Waveforms)
| PARAMETER | FROM (INPUT) | TO (OUTPUT) | TA = 25°C | TA = −40°C TO 125°C | TA = −40°C TO 85°C | UNIT | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | TYP | MAX | MIN | MAX | MIN | MAX | ||||
| tPLH | A or B | Y | 1.5 | 7.5 | 9.5 | 1 | 12.5 | 1 | 10 | ns |
| tPHL | 1.5 | 7 | 8.5 | 1 | 11.5 | 1 | 9 | |||
4.6 Switching Characteristics, VCC = 5V ± 0.5V
over recommended operating free-air temperature range, VCC
= 5V ± 0.5V (unless otherwise noted) (see Load Circuit
and Voltage Waveforms)
| PARAMETER | FROM (INPUT) | TO (OUTPUT) | TA = 25°C | TA = −40°C TO 125°C | TA = −40°C TO 85°C | UNIT | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| MIN | TYP | MAX | MIN | MAX | MIN | MAX | ||||
| tPLH | A or B | Y | 1.5 | 5.5 | 7.5 | 1 | 9 | 1 | 8.5 | ns |
| tPHL | 1.5 | 7 | 8.5 | 1 | 11.5 | 1 | 9 | |||
4.7 Operating Characteristics
VCC = 5 V, TA = 25°C
| PARAMETER | TEST CONDITIONS | TYP | UNIT | ||
|---|---|---|---|---|---|
| Cpd | Power dissipation capacitance | CL = 50pF, | f = 1 MHz | 20 | pF |
5 Parameter Measurement Information
A. CL includes probe and jig capacitance.
B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr v 2.5 ns, tf v 2.5 ns.
C. The outputs are measured one at a time, with one input transition per measurement.
Figure 5-1 Load Circuit and Voltage Waveforms| TEST | S1 |
|---|---|
| tPLH/tPHL | Open |
6 Detailed Description
6.1 Functional Block Diagram
Figure 6-1 Logic Diagram, Each Gate (Positive Logic)6.2 Device Functional Modes
Table 6-1 Function Table (Each
Gate)
| INPUTS | OUTPUT Y | |
|---|---|---|
| A | B | |
| H | H | H |
| L | X | L |
| X | L | L |
