name:         HD-6402
function:     UART
package:      PDIP,CERDIP,40
manufacturer: Harris Semiconductor
added-by:     Michael Hills

     +--()--+
 Vcc | 1  40| TRC
  NC | 2  39| EPE
 GND | 3  38| CLS1
 RRD | 4  37| CLS2
RBR8 | 5  36| SBS
RBR7 | 6  35| PI
RBR6 | 7  34| CRL
RBR5 | 8  33| TBR8
RBR4 | 9  32| TBR7
RBR3 |10  31| TBR6
RBR2 |11  30| TBR5
RBR1 |12  29| TBR4
  PE |13  28| TBR3
  FE |14  27| TBR2
  OE |15  26| TB1
 SFD |16  25| TRO
 RRC |17  24| TRE
/DRR |18  23| /TBRL
  DR |19  22| TBRE
 RRI |20  21| MR
     +------+

This information was added by a third party and may be incorrect.

This pinout came from the Chipdir:
http://www.chipdir.org/