Framer T1 5V 28-Pin PLCC

The DS2176 is a low-power CMOS device specifically designed for synchronizing receive-side loop-timed T-carrier data streams with system-side timing. The device has several flexible operating modes that simplify interfacing incoming data to parallel and serial TDM backplanes. The device extracts, buffers and integrates ABCD signaling; signaling updates are prohibited during alarm or slip conditions. The buffer replaces extensive hardware in existing applications with one "skinny" 24-pin package. Application areas include digital trunks, drop and insert equipment, transcoders, digital cross-connects (DAC), private network equipment, and PABX-to-computer interfaces such as DMI and CPI.

• Synchronizes loop-timed and system-timed T1 data streams
• Two-frame buffer depth; slips occur on frame boundaries
• Output indicates when slip occurs
• Buffer can be recentered externally
• Ideal for 1.544 to 2.048MHz rate conversion
• Interfaces to parallel or serial backplanes
• Extracts and buffers robbed-bit signaling
• Inhibits signaling updates during alarm or slip conditions
• Integration feature "debounces" signaling
• Slip-compensated output indicates when signaling updates occur
• Compatible with DS2180A T1 transceiver
• Surface mount package available, designated DS2176Q
• Industrial temperature range of -40°C to +85°C available, designated DS2176N