74F350 Datasheet | Fairchild Semiconductor

Description The 74F350 is a specialized multiplexer that accepts a 4-bit word and shifts it 0, 1, 2 or 3 places, as determined by two Select (S0, S1) inputs. For expansion to longer words, three linking inputs are provided for lower-order bits; thus two packages can shift an 8-bit word, four packages a 16-bit word, etc. Shifting by more than three places is acplished by paralleling the 3-STATE outputs of different packages and using the Output Enable (OE ) inputs as a third Select level. With appropriate interconnections, the 74F350 can perform zero-backfill, sign-extend or endaround (barrel) shift functions. Features s Linking inputs for word expansion s 3-STATE outputs for extending shift range Ordering Code: Order Number 74F350SC 74F350SJ 74F350PC Package Number M16A M16D N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC Truth Table Inputs OE H L L L L S1 X L L H H S0 X L H L H O0 Z I0 I- 1 I- 2 I- 3 Outputs O1 Z I1 I0 I- 1 I- 2 O2 Z I2 I1 I0 I- 1 O3 Z I3 I2 I1 I0 H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance © 1999 Fairchild Semiconductor Corporation DS009518 .fairchildsemi. Unit Loading/Fan Out Pin Names S0, S1 I- 3- I3 OE O0- O3 Description Select Inputs Data Inputs Output Enable Input (Active LOW) 3-STATE Outputs U.L. HIGH/LOW 1.0/2.0 1.0/2.0 1.0/2.0 150/40 (33.3) Input IIH/IIL Output IOH/IOL 20 µA/- 1.2 m A 20 µA/- 1.2 m A 20 µA/- 1.2 m A - 3 m A/24 m A (20 m A) Functional Description The 74F350 is operationally equivalent to a 4-input multiplexer with the inputs connected so that the select code causes successive one-bit shifts of the data word. This internal connection makes it possible to...