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74ABT853PWDH датащи(PDF) 2 Page - NXP Semiconductors |
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74ABT853PWDH датащи(HTML) 2 Page - NXP Semiconductors |
2 / 7 page Philips Semiconductors Product specification 74ABT853 8-bit transceiver with 9-bit parity checker/ generator and flag latch (3-State) 1995 Sep 06 2 PIN DESCRIPTION SYMBOL PIN NUMBER NAME AND FUNCTION A0 – A7 2, 3, 4, 5, 6, 7, 8, 9 A port 3–State inputs/outputs B0 – B7 23, 22, 21, 20, 19, 18, 17, 16 B port 3–State inputs/outputs OEA 1 Enables the A outputs when Low OEB 14 Enables the B outputs when Low PARITY 15 Parity output/input ERROR 10 Error output (open collector) CLEAR 11 Clears the error flag register when Low ENABLE 13 Enable input (active-Low) GND 12 Ground (0V) VCC 24 Positive supply voltage FUNCTION TABLE INPUTS OUTPUTS MODE OEB OEA An Σ OF HIGHS Bn + PARITY Σ OF HIGHS An Bn PARITY A data to B bus and generate odd parity output L H Odd Even (output) (input) An L H B data to A bus and check for parity error1 H L (output) X Bn (input) (input) A bus and B bus disabled2 H H X X Z Z Z A data to B bus and generate inverted parity output L L Odd Even (output) (input) An H L NOTES: 1. Error checking is detailed in the Error Flag Function Table below. 2. When ENABLE is Low, ERROR is Low if the sum of A inputs is even or ERROR is High if the sum of A inputs is odd. ERROR FLAG FUNCTION TABLE INPUTS INTERNAL NODE OUTPUT MODE ENABLE CLEAR Bn + PARITY Σ OF HIGHS POINT ”P” PRE–STATE ERRORn–1 ERROR OUTPUT Pass L L Odd Even H L X H L Sample L H Odd Even X H L X H X L H L L Clear H L X X X H Store H H X X L H L H H = High voltage level steady state L = Low voltage level steady state X = Don’t care Z = High impedance ”off” state |
Аналогичный номер детали - 74ABT853PWDH |
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Аналогичное описание - 74ABT853PWDH |
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