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PI74LPT16952B Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI74LPT16952B Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
1 / 5 page PI74LPT16952 3.3V 16-BIT REGISTERED TRANSCEIVERS 1 PS2076A 02/4/97 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74LPT16952 Fast CMOS 3.3V 16-Bit Registered Transceivers D 1 CLKAB C 1 OEAB 1 CEAB 1 CLKBA 1 CEBA 1 B0 TO 7 OTHER CHANNELS D C 1 A0 1 OEBA D 2 CLKAB C 2 OEAB 2 CEAB 2 CLKBA 2 CEBA 2 B0 TO 7 OTHER CHANNELS D C 2 A0 2 OEBA Logic Block Diagram Product Features • Compatible with LCX™ and LVT™ families of products • Supports 5V Tolerant Mixed Signal Mode Operation – Input can be 3V or 5V – Output can be 3V or connected to 5V bus • Advanced Low Power CMOS Operation • Excellent output drive capability: Balanced drives (24 mA sink and source) • Pin compatible with industry standard double-density pinouts • Low ground bounce outputs • Hysteresis on all inputs • Industrial operating temperature range: –40°C to +85°C • Multiple center pins and distributed Vcc/GND pins minimize switching noise • Packages available: – 56-pin 240 mil wide plastic TSSOP (A) – 56-pin 300 mil wide plastic SSOP (V) Product Description Pericom Semiconductor’s PI74LPT series of logic circuits are produced in the Company’s advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74LPT16952 is a 16-bit registered transceivers organized with two sets of eight D-type latches with separate input and output controls for each set. For data flow from A to B, for example, the A- to-B Enable (xCEAB) input must be LOW to enter data from xAx. The data present on the A port will be clocked on the B register when xCLKAB toggles from LOW-to-HIGH. The xOEAB control performs the output enable function on the B port. Control of data from B to A is similar, but uses the xCEAB, xCLKAB, and xOEAB inputs. By connecting the control pins of the two independent transceivers together, a full 16-bit operation can be achieved. The output buffers are designed with a Power-Off disable allowing “live insertion” of boards when used as backplane drivers. The PI74LPT16952 can be driven from either 3.3V or 5.0V devices allowing this device to be used as a translator in a mixed 3.3/5.0V system. |
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