SN74LS399 Datasheet
SN74LS399 Datasheet (Motorola Semiconductor)
Motorola Semiconductor
The SN54 / 74LS398 and SN54 / 74LS399 are high-speed Quad 2-Port Registers. They select four bits of data from two sources (Ports) under the control of a common Select Input (S). The selected data is .
both Q and Q inputs, while the SN54/ 74LS399 has only Q outputs.
* Select From Two Data Sources
* Fully Positive Edge-Triggered Operation
* Both True and Complemented Outputs on SN54/ 74LS398
* Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC Qd Qd Iod I1.
SN74LS399 Datasheet (Texas Instruments)
Texas Instruments
SN54LS399, SN74LS399 QUADRUPLE 2-INPUT MULTIPLEXERS WITH STORAGE SDLS174 – OCTOBER 1976 – REVISED MARCH 1988 PRODUCTION DATA information is current as of publication date. Products conform to specifi.
DIP CDIP PDIP J 16 1 Non-RoHS & Non-Green J 16 1 Non-RoHS & Non-Green J 16 1 Non-RoHS & Non-Green N 16 25 RoHS & Green Lead finish/ Ball material (6) SNPB SNPB SNPB NIPDAU MSL Peak Temp Op Temp (°C) (3) N / A for Pkg Type -55 to 125 N / A for Pkg Type -55 to 125 N / A for Pkg T.