Surgeons at Johns Hopkins Hospital yesterday implanted a heart pacemaker in former Baltimore Colt and NFL Hall of Famer Art Donovan. Donovan was in stable condition after the operation, the hospital said.

"The operation went very well and he has an excellent prognosis," said cardiac surgeon Levi Watkins, who performed the procedure.

Donovan, a defensive tackle, became the Colts' first Hall of Famer in 1968.

In lieu of flowers, Donovan requested that donations be made to the Grant-a-Wish Foundation, an organization for critically ill children. The money will go toward construction of the Children's House at Hopkins, where families of critically ill children will stay during treatments.

The address of the Grant-a-Wish Foundation is P.O. Box 21211, Baltimore, Md. 21228.