SN74AS298A Datasheet | Texas Instruments

description The SN74AS298A is a quadruple 2-input multiplexer with storage that provides essentially the equivalent functional capabilities of two separate MSI functions (SN74AS157 and ′AS175A) in a 16-pin package. When the word-select (WS) input is low, word 1 (A1, B1, C1, D1) is applied to the flip-flops. A high input to WS causes the selection of word 2 (A2, B2, C2, D2). The selected word is clocked to the output terminals on the negative-going edge of the clock pulse. The SN74AS298A is characterized for operation from 0°C to 70°C. FUNCTION TABLE INPUTS OUTPUTS† WS CLK QA QB QC QD ↓ a1 b1 c1 d1 ↓ a2 b2 c2 d2 H QA0 QB0 QC0 QD0 † a1, a2, etc. = the level of steady-state input at A1, A2, etc. QA0, QB0, etc. = the level of QA, QB, etc. entered on the most recent ↓ transition of CLK PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright  1994, Texas Instruments Incorporated - POST OFFICE BOX 655303 DALLAS, TEXAS 75265 - POST OFFICE BOX 1443 HOUSTON, TEXAS 77251- 1443 SN74AS298A QUADRUPLE 2ĆINPUT MULTIPLEXER WITH STORAGE SDAS219B - DECEMBER 1983 - REVISED DECEMBER 1994 logic symbol† 10 WS 11 CLK 3 A1 2 A2 4 B1 1 B2 9 C1 5 C2 7 D1 6 D2 MUX G1 C2 1, 2D 1, 2D † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication...