Part number	Datasheet
Farnell: ?	n/a
Mouser: 692-Z84C3008PEG	Zilog, Z84C30
RS: 625-8996	Zilog, Z84C30

The above part is rated at a clock speed of 8 MHz but a faster part, such as the 10MHz part shown below, can be used instead.

Part number	Datasheet
Farnell: ?	n/a
Mouser: 692-Z84C3010PEG	Zilog, Z84C30
RS: n/a	n/a

Further information can be found in the Z80 CPU Peripherals User Manual – Zilog – UM0081