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2 / 14 page Philips Semiconductors Product specification 74ALVT16952 2.5V/3.3V 16-bit registered transceiver (3-State) 2 1998 Mar 19 853-2053 19136 FEATURES • Two 8-bit registered transceivers • 5V I/O Compatible • 3-State buffers • Output capability: +64mA/–32mA • TTL input and output switching levels • Input and output interface capability to systems at 5V supply • Bus hold data inputs eliminate the need for external pull-up resistors to hold unused inputs • Live insertion/extraction permitted • Power-up 3-State • Power-up reset • No bus current loading when output is tied to 5V bus • Latch-up protection exceeds 500mA per JEDEC Std 17 • ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model DESCRIPTION The 74ALVT16952 is a high-performance BiCMOS product designed for VCC operation at 2.5V or 3.3V with I/O compatibility up to 5V. The 74ALVT16952 is a dual octal registered transceiver. Two 8-bit registers store data flowing in both directions between two bidirectional buses. Data applied to the inputs is entered and stored on the rising edge of the Clock (nCPXX) provided that the Clock Enable (nCEXX) is Low. The data is then present at the 3-State output buffers, but is only accessible when the Output Enable (nOEXX) is Low. Data flow from A inputs to B outputs is the same as for B inputs to A outputs. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS TYPICAL UNIT SYMBOL PARAMETER Tamb = 25°C; GND = 0V 2.5V 3.3V UNIT tPLH tPHL Propagation delay nCPBA to nAx or nCPAB to nBx CL = 50pF; 3.0 3.0 2.3 2.3 ns CIN Input capacitance VI = 0V or VCC 3 3 pF CI/O I/O pin capacitance VI/O = 0V or VCC Outputs disabled 9 9 pF ICCZ Total supply current Outputs disabled 40 70 µA ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER 56-Pin Plastic SSOP Type III –40 °C to +85°C 74ALVT16952 DL AV16952 DL SOT371-1 56-Pin Plastic TSSOP Type II –40 °C to +85°C 74ALVT16952 DGG AV16952 DGG SOT364-1 LOGIC SYMBOL (IEEE/IEC) C6 C5 C6 C5 1 56 54 3 5 6 8 9 10 12 13 14 52 51 49 48 47 45 44 43 1, 4, 5 55 2, 3, 6 2 EN4 EN3 EN2 EN1 1, 4, 5 2, 3, 6 EN4 EN3 EN2 EN1 15 16 17 19 20 21 23 24 26 31 29 28 27 30 42 41 40 38 37 36 34 33 SH00069 |
Số phần tương tự - 74ALVT16952 |
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Mô tả tương tự - 74ALVT16952 |
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