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PDU138 Datasheet(PDF) 1 Page - Data Delay Devices, Inc. |
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PDU138 Datasheet(HTML) 1 Page - Data Delay Devices, Inc. |
1 / 5 page PDU138 Doc #02004 DATA DELAY DEVICES, INC. 1 5/6/02 3 Mt. Prospect Ave. Clifton, NJ 07013 3-BIT PROGRAMMABLE DELAY LINE (SERIES PDU138) FEATURES PACKAGES • Digitally programmable in 8 delay steps • Monotonic delay-versus-address variation • Precise and stable delays • Input & outputs fully TTL interfaced & buffered • 10 T 2L fan-out capability • Fits standard 16-pin DIP socket • Auto-insertable FUNCTIONAL DESCRIPTION The PDU138-series device is a 3-bit digitally programmable delay line. The delay, TDA, from the input pin (IN) to the output pin (OUT) depends on the address code (A2-A0) according to the following formula: TDA = TD0 + TINC * A where A is the address code, TINC is the incremental delay of the device, and TD0 is the inherent delay of the device. The incremental delay is specified by the dash number of the device and can range from 0.5ns through 50ns, inclusively. The enable pin (EN/) is held LOW during normal operation. When this signal is brought HIGH, OUT is forced into the LOW state. The address is not latched and must remain asserted during normal operation. SERIES SPECIFICATIONS • Total programmed delay tolerance: 5% or 1ns, whichever is greater • Inherent delay (TD0): 7ns typical (OUT) • Setup time and propagation delay: Address to input setup (TAIS): 12ns typ. Disable to output delay (TDISO): 12ns typ. • Operating temperature: 0 ° to 70° C • Temperature coefficient: 100PPM/ °C (excludes TD 0) • Supply voltage VCC: 5VDC ± 5% • Supply current: ICCH = 45ma ICCL = 20ma • Minimum pulse width: 20% of total delay © ©2002 Data Delay Devices data delay devices, inc. ® ® 3 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 N/C N/C N/C IN OUT N/C EN/ GND VCC N/C N/C N/C N/C A0 A1 A2 PDU138-xx DIP PDU138-xxM Military DIP PIN DESCRIPTIONS IN Delay Line Input OUT Non-inverted Output A2 Address Bit 2 A1 Address Bit 1 A0 Address Bit 0 EN/ Output Enable VCC +5 Volts GND Ground DASH NUMBER SPECIFICATIONS Part Number Incremental Delay Per Step (ns) Total Delay Change (ns) PDU138-.5 .5 ± .3 3.5 ± 1.0 PDU138-1 1 ± .4 7 ± 1.0 PDU138-2 2 ± .4 14 ± 1.0 PDU138-5 5 ± .6 35 ± 1.8 PDU138-10 10 ± 1.0 70 ± 3.5 PDU138-12 12 ± 1.2 84 ± 4.2 PDU138-15 15 ± 1.3 105 ± 5.3 PDU138-20 20 ± 1.5 140 ± 7.0 PDU138-40 40 ± 2.0 280 ± 14.0 PDU138-50 50 ± 2.5 350 ± 17.5 NOTE: Any dash number between .5 and 50 not shown is also available. |
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