PDU16F Datasheet PDF - Data Delay Devices

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PDU16F
Data Delay Devices

Part Number PDU16F
Description 6-BIT PROGRAMMABLE DELAY LINE
Page 5 Pages


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6-BIT PROGRAMMABLE
DELAY LINE
(SERIES PDU16F)
PDU16F
data
delay
3
®
devices, inc.
FEATURES
Digitally programmable in 64 delay steps
Monotonic delay-versus-address variation
Two separate outputs: inverting & non-inverting
Precise and stable delays
Input & outputs fully TTL interfaced & buffered
10 T2L fan-out capability
Fits standard 24-pin DIP socket
Auto-insertable
OUT/
OUT
EN/
GND
N/C
IN
N/C
GND
N/C
N/C
EN/
GND
PACKAGES
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 16
10 15
11 14
12 13
VCC
A0
A1
A2
VCC
N/C
N/C
N/C
VCC
A3
A4
A5
PDU16F-xx
DIP
PDU16F-xxA4
Gull-Wing
PDU16F-xxB4
J-Lead
PDU16F-xxM
Military DIP
PDU16F-xxMC4
Military Gull-Wing
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The PDU16F-series device is a 6-bit digitally programmable delay line.
IN Delay Line Input
The delay, TDA, from the input pin (IN) to the output pins (OUT, OUT/)
depends on the address code (A5-A0) according to the following formula:
OUT Non-inverted Output
OUT/ Inverted Output
A0-A5 Address Bits
TDA = TD0 + TINC * A
EN/ Output Enable
VCC +5 Volts
where A is the address code, TINC is the incremental delay of the device,
GND Ground
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 10ns, inclusively. The
enable pins (EN/) are held LOW during normal operation. These pins must always be in the same state
and may be tied together externally. When these signals are brought HIGH, OUT and OUT/ are forced
into LOW and HIGH states, respectively. The address is not latched and must remain asserted during
normal operation.
SERIES SPECIFICATIONS
DASH NUMBER SPECIFICATIONS
Programmed delay tolerance: 5% or 1ns,
whichever is greater
Inherent delay (TD0): 9ns typical (OUT)
8ns typical (OUT/)
Setup time and propagation delay:
Address to input setup (TAIS): 5ns
Disable to output delay (TDISO): 6ns typ. (OUT)
Operating temperature: 0° to 70° C
Temperature coefficient: 100PPM/°C (excludes TD0)
Supply voltage VCC: 5VDC ± 5%
Supply current: ICCH = 74ma
ICCL = 30ma
Minimum pulse width: 10% of total delay
Part
Number
PDU16F-.5
PDU16F-1
PDU16F-2
PDU16F-3
PDU16F-4
PDU16F-5
PDU16F-6
PDU16F-8
PDU16F-10
Incremental Delay
Per Step (ns)
.5 ± .3
1 ± .5
2 ± .5
3 ± 1.0
4 ± 1.0
5 ± 1.0
6 ± 1.0
8 ± 1.0
10 ± 1.5
Total Delay
Change (ns)
31.5 ± 1.6
63 ± 3.2
126 ± 6.3
189 ± 9.5
252 ± 12.6
315 ± 15.8
378 ± 18.9
504 ± 25.2
630 ± 31.5
NOTE: Any dash number between .5 and 10 not
shown is also available.
©1997 Data Delay Devices
Doc #97004
1/13/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1



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PDU16F
APPLICATION NOTES
ADDRESS UPDATE
The PDU16F is a memory device. As such,
special precautions must be taken when
changing the delay address in order to prevent
spurious output signals. The timing restrictions
are shown in Figure 1.
After the last signal edge to be delayed has
appeared on the OUT pin, a minimum time,
TOAX, is required before the address lines can
change. This time is given by the following
relation:
TOAX = max { (Ai - A i-1) * TINC , 0 }
where A i-1 and Ai are the old and new address
codes, respectively. Violation of this constraint
may, depending on the history of the input signal,
cause spurious signals to appear on the OUT
pin. The possibility of spurious signals persists
until the required TOAX has elapsed.
A similar situation occurs when using the EN/
signal to disable the output while IN is active. In
this case, the unit must be held in the disabled
state until the device is able to “clear” itself. This
is achieved by holding the EN/ signal high and
the IN signal low for a time given by:
TDISH = Ai * TINC
Violation of this constraint may, depending on
the history of the input signal, cause spurious
signals to appear on the OUT pin. The
possibility of spurious signals persists until the
required TDISH has elapsed.
INPUT RESTRICTIONS
There are three types of restrictions on input
pulse width and period listed in the AC
Characteristics table. The recommended
conditions are those for which the delay
tolerance specifications and monotonicity are
guaranteed. The suggested conditions are
those for which signals will propagate through the
unit without significant distortion. The absolute
conditions are those for which the unit will
produce some type of output for a given input.
When operating the unit between the
recommended and absolute conditions, the
delays may deviate from their values at low
frequency. However, these deviations will
remain constant from pulse to pulse if the input
pulse width and period remain fixed. In other
words, the delay of the unit exhibits frequency
and pulse width dependence when operated
beyond the recommended conditions. Please
consult the technical staff at Data Delay Devices
if your application has specific high-frequency
requirements.
Please note that the increment tolerances listed
represent a design goal. Although most delay
increments will fall within tolerance, they are not
guaranteed throughout the address range of the
unit. Monotonicity is, however, guaranteed over
all addresses.
A5-A0
EN/
IN
OUT
OUT/
TAENS
A i-1
TOAX
TAIS
Ai
TENIS
PWIN
TDISH
TDA
PWOUT
TDISO
TSKEW
Figure 1: Timing Diagram
Doc #97004
DATA DELAY DEVICES, INC.
1/13/97
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
2



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DEVICE SPECIFICATIONS
PDU16F
TABLE 1: AC CHARACTERISTICS
PARAMETER
Total Programmable Delay
Inherent Delay
Output Skew
Disable to Output Low Delay
Address to Enable Setup Time
Address to Input Setup Time
Enable to Input Setup Time
Output to Address Change
Disable Hold Time
Absolute
Input Period
Suggested
Recommended
Absolute
Input Pulse Width
Suggested
Recommended
SYMBOL
TDT
TD0
TSKEW
TDISO
TAENS
TAIS
TENIS
TOAX
TDISH
PERIN
PERIN
PERIN
PWIN
PWIN
PWIN
MIN
2.0
5.0
2.5
See Text
See Text
20
40
200
10
20
100
TYP
63
9.0
1.5
6.0
UNITS
TINC
ns
ns
ns
ns
ns
ns
% of TDT
% of TDT
% of TDT
% of TDT
% of TDT
% of TDT
TABLE 2: ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL MIN
MAX UNITS NOTES
DC Supply Voltage
VCC
-0.3 7.0
V
Input Pin Voltage
VIN -0.3 VDD+0.3 V
Storage Temperature
TSTRG
-55
150
C
Lead Temperature
TLEAD
300 C 10 sec
TABLE 3: DC ELECTRICAL CHARACTERISTICS
(0C to 70C, 4.75V to 5.25V)
PARAMETER
SYMBOL
High Level Output Voltage
VOH
Low Level Output Voltage
VOL
High Level Output Current
Low Level Output Current
High Level Input Voltage
Low Level Input Voltage
Input Clamp Voltage
Input Current at Maximum
Input Voltage
High Level Input Current
Low Level Input Current
Short-circuit Output Current
Output High Fan-out
Output Low Fan-out
IOH
IOL
VIH
VIL
VIK
IIHH
IIH
IIL
IOS
MIN
2.5
2.0
-60
TYP
3.4
0.35
MAX
0.5
-1.0
20.0
0.8
-1.2
0.1
20
-0.6
-150
25
12.5
UNITS
V
V
mA
mA
V
V
V
mA
NOTES
VCC = MIN, IOH = MAX
VIH = MIN, VIL = MAX
VCC = MIN, IOL = MAX
VIH = MIN, VIL = MAX
VCC = MIN, II = IIK
VCC = MAX, VI = 7.0V
µA
mA
mA
Unit
Load
VCC = MAX, VI = 2.7V
VCC = MAX, VI = 0.5V
VCC = MAX
Doc #97004
1/13/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
3



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PDU16F
PACKAGE DIMENSIONS
24 23 22 21 20 19 18 17 16 15 14 13
Lead Material:
Nickel-Iron alloy 42
TIN PLATE
1 2 3 4 5 6 7 8 9 10 11 12
1.270
.280
MAX.
.290
MAX.
.018 TYP.
1.100
.015 TYP.
.070 MAX.
.010±.002
.350
MAX.
Commercial DIP (PDU16F-xx)
.020 TYP.
.040 TYP.
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
.010 TYP.
.270
TYP.
.430
TYP.
.110 .100
1.100
1.290 MAX.
.300
MAX.
.050
TYP.
Commercial Gull-Wing (PDU16F-xxA4)
.020 TYP.
.040 TYP.
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
.050 TYP.
.270
TYP.
.320
TYP.
.110 .100
1.100
1.290 MAX.
.350
MAX.
.110
TYP.
Commercial J-Lead (PDU16F-xxB4)
24 23 22 21 20
12 3 4
6
16 15 14 13
8 11 12
.410
MAX.
1.300 TYP.
.300
MAX.
.018 TYP.
.100 TYP.
1.100 TYP.
.130
MIN.
.100
Military DIP (PDU16F-xxM)
.012 TYP.
.300
TYP.
.020 TYP.
.040 TYP.
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
.010±.002
.710 .590
±.005 MAX.
.882
±.005
.007
±.005
.090 .100
1.100
1.280±.020
.280
MAX.
.050
±.010
Military Gull-Wing (PDU16F-xxMC4)
Doc #97004
DATA DELAY DEVICES, INC.
1/13/97
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
4



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