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> (10) LB1060AB phone loop termination switch, at&t 1060
(10) LB1060AB phone loop termination switch, at&t 1060
(10) LB1060AB phone loop termination switch, at&t 1060
(10) LB1060AB TELEPHONE LOOP TERMINATION
AT&T MOTOROLA 1060 BILATERAL SWITCH, NOS ICs
New, old stock (NOS), DIP ICs, made by Motorola for AT&T. These 8-pin interface Motorola LB1060 type Loop Termination Switch ICs are now a very rare collectible, as well as being ideal for many kinds of telephone security applications, telephone interfaces, including telephone networks, telephone diagnostics, as well as for many non-telephone uses. This legendary LB 1060AB Motorola bilateral switch IC is also referred to as a Remote Subscriber Line Test Unit, such as lineman's handset / lineman's test set, and as a Remote Isolation Device / Maintenance Termination Unit (RID/MTU).
The Motorola AT&T LB1060 consists of two independent switches, which can be used together or separately. The LB1060 is ideal for phone and network diagnostic, interface and security work and very useful for many other non teleco circuit uses. For more information on this eye-popping telephone IC / network IC, please refer to: www. tinaja.com/glib/muse96.pdf - one of the legendary Tech Musings webpages. This LB1060's many non-phone uses include a simple generator for sawtooth and pulse waveforms, low-voltage LED flasher, power supply crowbar, overvoltage detector, simple memory or latch, analog switch, digital switch, lamp flashers, doorbell circuits, alarm systems, and as an AM radio alignment generator.
Each bilateral switch snaps ON when the teleco line voltage is present and exceeds 17 Volts (Off Hook condition), and snaps OFF when its current drops under 3 ma (On Hook condition. When ON, each of the 20uf and 150ohm circuits are bypassed. Because of this automatic switching due to certain voltage and current conditions and the fact that the 1060 can take much higher voltages than common bilateral switches, the 1060 cannot be directly replaced by other bilateral switches, such as the CMOS 4016 (e.g. CD4016B, MC14016B) and the CMOS 4066 (e.g. CD4066B, MC14066B), both of which require additional wiring and parts to emulate the 1060 but even so are still limited to relatively low voltages.
The AT&T LB1060AB was originally priced at about $4.40 each - even then they were reputedly highly restricted for teleco uses only. Highly restricted probably because the AT&T 1060 is cherished by phone phreakers because they could (and still) can interface many different types of circuits to phone lines for their various phone color box applications and experiments, and other phone interface circuits.
NOTE: Later availability not guaranteed. LIMITED QUANTITY
Seller listing codes: LD049, LR000-S00, LS000-R00, MM000, CC000.
Temporary Email: wilma-mccullough@dontscrapit.com (Wilma Mccullough)
