Features

◆ True Dual-Ported memory cells which allow simultaneous

access of the same memory location

◆ High-speed access

– Commercial: 15/55ns (max.)

– Industrial 20ns (max.)

◆ Low-power operation

– IDT70261S

Active: 750mW (typ.)

Standby: 5mW (typ.)

– IDT70261L

Active: 750mW (typ.)

Standby: 1mW (typ.)

◆ Separate upper-byte and lower-byte control for multiplexed

bus compatibility

◆ IDT70261 easily expands data bus width to 32 bits or more

using the Master/Slave select when cascading more than

one device

◆ M/S = H for BUSY output flag on Master,

M/S = L for BUSY input on Slave

◆ Busy and Interrupt Flags

◆ On-chip port arbitration logic

◆ Full on-chip hardware support of semaphore signaling

between ports

◆ Fully asynchronous operation from either port

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

◆ Available in 100-pin Thin Quad Flatpack

◆ Industrial temperature range (-40OC to +85OC) is available

for selected speeds

◆ Green parts available. See ordering information