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.
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
|Part number||Order||Function||Technology Family||VCC (Min) (V)||VCC (Max) (V)||Channels (#)||Voltage (Nom) (V)||F @ nom voltage (Max) (MHz)||ICC @ nom voltage (Max) (mA)||tpd @ nom Voltage (Max) (ns)||Configuration||Type||IOL (Max) (mA)||IOH (Max) (mA)||Rating||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)||Bits (#)||Digital input leakage (Max) (uA)||ESD CDM (kV)||ESD HBM (kV)|
|AS||4.5||5.5||4||5||125||36||11||2:1||Standard||20||-2||Catalog||0 to 70||
PDIP | 16
SOIC | 16
16PDIP: 181 mm2: 9.4 x 19.3 (PDIP | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)