This is a bipolar PAL circuit, with observable fuses.
Package
(Logo) 08SED78 TIBPAL16R4-25CN
Die
(M) TI 1985
F16A4-25F
Resistor test features also labelled:
20KH 20KC 2KL
Map of top metal imaged under Nikon PlanApo 40x/1.0 oil
- Single (34803×34753, 308.619MiB)
