الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > SN74HC245PWR

SN74HC245PWR

Octal bus transceiver, 3-state outputs, 2-6V, 8-channel, TSSOP-20

7654

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جزء الشركة المصنعة ： جزء الشركة المصنعة

SN74HC245PWR

الحزمة ： الحزمة

TSSOP-20 (6.5 x 4.4 mm)

العلامة التجارية ： العلامة التجارية

فئات المنتجات:：فئات المنتجات

الدوائر المتكاملة الدوائر المتكاملة

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الوصف

نظرة عامة على المنتج

The SN74HC245PWR is an octal bus transceiver with 3-state outputs from Texas Instruments. Designed for asynchronous two-way communication between data buses, it features a wide operating voltage range of 2V to 6V, 12 ns typical propagation delay, and +/-6 mA output drive at 5V, housed in a 20-pin TSSOP package.

المواصفات الرئيسية

جهد الإمداد	2V to 6V
عدد القنوات	8
Propagation Delay (tpd)	12 ns typical
Output Drive	+/-6 mA at 5V
ICC (Max)	80 uA
الحزمة	TSSOP-20 (6.5 x 4.4 mm)
درجة حرارة التشغيل	-40 درجة مئوية إلى +85 درجة مئوية

الميزات

Wide operating voltage range: 2V to 6V
High-current 3-state outputs drive bus lines directly
Low power consumption: 80 uA max ICC
Balanced output propagation delays
Positive input clamp diodes for ESD protection

التطبيقات

Microprocessor system bus driving
Memory address/data bus buffering
Communication systems
Level translation between logic domains

مقدمة المنتج:SN74HC245PWR مقدمة المنتج

The SN74HC245PWR from Texas Instruments is an octal bus transceiver with 3-state outputs designed for asynchronous bidirectional communication between data buses. It allows data transmission from bus A to bus B or from bus B to bus A, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can disable the device, effectively isolating the buses. With a wide operating voltage range and high-current 3-state outputs, this device is ideal for bus driving and buffering applications.

مبدأ العمل:SN74HC245PWR مبدأ العمل

The SN74HC245PWR operates as a bidirectional bus transceiver controlled by two signals. The DIR pin determines data flow direction: high level sends data from A to B, low level from B to A. The OE pin enables or disables the outputs: when OE is low, the transceiver is active; when OE is high, all outputs enter a high-impedance state, isolating the buses. Each of the 8 channels independently passes data in the selected direction with typical propagation delay of 12 ns.

وصف الدبوس:SN74HC245PWR تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوظيفة
1	DIR	المدخلات	Direction control (A-to-B or B-to-A)
2-9	A1-A8	Bidirectional	Bus A data lines
10	GND	أرضي	مرجع أرضي
11-18	B8-B1	Bidirectional	Bus B data lines
19	OE	المدخلات	Output enable (active low)
20	VCC	الطاقة	Supply voltage 2V-6V

Application Scenarios:In which products and applications isSN74HC245PWR مستعمل

Microprocessor system bus buffering and driving
Memory interface address/data bus transceiving
Industrial control bus communication
Board-to-board data communication
Level translation between mixed-voltage domains

Alternative Models:What chips are recommended as replacements for SN74HC245PWR

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
TI	SN74HCT245PWR	TSSOP-20	TTL-compatible inputs, 4.5-5.5V
TI	SN74HC245DW	SOIC-20	Wider SOIC package
NXP	74HC245PW	TSSOP-20	Pin-compatible alternative
أونسمي	MC74HC245ADWR2G	SOIC-20	Equivalent function
TI	SN74LVC245APWR	TSSOP-20	Low-voltage version, 1.65-3.6V