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