Features

✵ High-speed access

– Commercial: 25ns (max.)

◆ Low-power operation

– IDT70121/70125L

Active: 675mW (typ.)

Standby: 1mW (typ.)

◆ MASTER IDT70121 easily expands data bus width to 18 bits or

more using SLAVE IDT70125 chip

◆ Fully asychronous operation from either port

◆ On-chip port arbitration logic (IDT70121 only)

◆ BUSY output flag on Master; BUSY input on Slave

◆ INT flag for port-to-port communication

◆ Battery backup operation—2V data retention

◆ TTL-compatible, signal 5V (±10) power supply

◆ Available in 52-pin PLCC

◆ Green parts available, see ordering information