Demand of cash security for Bail;

It is not mandatory that the accused should furnish cash bail. it is within the discretion of the Magistrate or Judge to ask for cash bail. There is no hard and fast rule on that point. However, it is expected that the discretion should be used judiciously.

h security/despite personal bond of the accused couple with sufficient surety can the Court refused bail as the accused could not deposit cash as demanded by the Court? does section 445 Crpc contemplate mandatory cash sec urity?

 If the court has passed order u/s 445 to furnish cash bail, the court has discretion to refuse release of accused if he fails to furnish cash bail. According to my interpretation of sec. 445 if the court asks for cash bail, it should not ask for sureties.

 In case you feel that the condition imposed is onerous, a revision petition can be filed against the said order before the High Court to modify the terms.  

Prakash is right. The prsiding officer may insist for cash even there is other securities. If aggrieved go in revision.