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Product Overview
The SN74HC640PWR from Texas Instruments is a high-performance octal bus transceiver designed for asynchronous two-way communication between data buses. It features 8-bit non-inverting buffers with 3-state outputs, enabling bidirectional data flow with direction control via the DIR input. The device operates over a wide supply voltage range of 2V to 6V, making it suitable for interfacing with various logic families. Housed in a compact 20-pin TSSOP package, it is ideal for space-constrained applications requiring high-speed data transfer and low power consumption.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
2V to 6V |
| Input Voltage (VI) |
0V to VCC |
| Output Voltage (VO) |
0V to VCC |
| High-Level Input Voltage (VIH) |
3.15V min (at VCC=4.5V) |
| Low-Level Input Voltage (VIL) |
1.35V max (at VCC=4.5V) |
| High-Level Output Current (IOH) |
-6mA (at VCC=4.5V) |
| Low-Level Output Current (IOL) |
6mA (at VCC=4.5V) |
| Propagation Delay (tpd) |
12ns typ (at VCC=4.5V, CL=50pF) |
| Operating Temperature Range |
-40°C to +85°C |
| Package |
20-TSSOP |
Key Features
- 8-bit bidirectional bus transceiver with non-inverting outputs
- 3-state outputs for bus-oriented applications
- Wide supply voltage range: 2V to 6V
- High noise immunity: typical 30% of VCC
- Low power consumption: ICC max 80µA
- ESD protection exceeds 2000V per MIL-STD-883, Method 3015
- Compatible with TTL levels
- Available in 20-pin TSSOP package for space-saving designs
Target Applications
The SN74HC640PWR is ideal for a variety of applications including:
- 5G base station control boards for data bus isolation and direction control
- Automotive dashboard display modules for communication between microcontrollers and display drivers
- Industrial automation PLCs for signal buffering and level translation
- Networking equipment such as routers and switches for backplane data transfer
- Consumer electronics like smart home hubs for interfacing sensors and actuators
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
SN74HC640PWR. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
SN74HC640PWR 是德州儀器(TI)生產的高性能八路匯流排收發器,專為數據匯流排之間的異步雙向通信而設計。它包含8位非反相緩衝器,具有三態輸出,通過DIR輸入控制數據方向。該器件在2V至6V的寬電源電壓範圍內工作,適用於與各種邏輯系列接口。採用緊湊的20引腳TSSOP封裝,非常適合需要高速數據傳輸和低功耗的空間受限應用。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
2V 至 6V |
| 輸入電壓 (VI) |
0V 至 VCC |
| 輸出電壓 (VO) |
0V 至 VCC |
| 高電平輸入電壓 (VIH) |
最小值 3.15V (VCC=4.5V 時) |
| 低電平輸入電壓 (VIL) |
最大值 1.35V (VCC=4.5V 時) |
| 高電平輸出電流 (IOH) |
-6mA (VCC=4.5V 時) |
| 低電平輸出電流 (IOL) |
6mA (VCC=4.5V 時) |
| 傳播延遲 (tpd) |
典型值 12ns (VCC=4.5V, CL=50pF 時) |
| 工作溫度範圍 |
-40°C 至 +85°C |
| 封裝 |
20-TSSOP |
核心特性
- 8位雙向匯流排收發器,非反相輸出
- 三態輸出,適用於匯流排應用
- 寬電源電壓範圍:2V 至 6V
- 高抗噪能力:典型值為 VCC 的 30%
- 低功耗:ICC 最大值 80µA
- ESD 保護超過 2000V,符合 MIL-STD-883 方法 3015
- 與 TTL 電平兼容
- 採用 20 引腳 TSSOP 封裝,節省空間
典型應用場景
SN74HC640PWR 適用於多種應用,包括:
- 5G 基站控制板,用於數據匯流排隔離和方向控制
- 汽車儀表盤顯示模塊,用於微控制器和顯示驅動器之間的通信
- 工業自動化 PLC,用於信號緩衝和電平轉換
- 網絡設備(如路由器和交換機)的背板數據傳輸
- 消費電子產品(如智能家居中樞)的傳感器和執行器接口
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