PPG36F
6-BIT PROGRAMMABLE
PULSE GENERATOR
(SERIES PPG36F)
FEATURES
•
•
•
•
•
•
•
•
•
Digitally programmable in 64 steps
Monotonic pulse-width-vs-address variation
Rising edge triggered
Two separate outputs: inverting & non-inverting
Precise and stable pulse width
Input & outputs fully TTL interfaced & buffered
2
10 T L fan-out capability
Fits standard 24-pin DIP socket
Auto-insertable
TRIG
N/C
OUT
N/C
N/C
N/C
RES
N/C
N/C
N/C
N/C
GND
1
2
3
4
5
6
7
8
9
10
11
12
data
3
®
delay
devices,
inc.
PACKAGES
24
23
22
21
20
19
18
17
16
15
14
13
VCC
OUT/
N/C
N/C
N/C
A0
A1
A2
N/C
A3
A4
A5
PPG36F-xx
DIP
PPG36F-xxC4 Gull-Wing
PPG36F-xxM
Military DIP
PPG36F-xxMC4 Military Gull-Wing
FUNCTIONAL DESCRIPTION
The PPG36F-series device is a 6-bit digitally programmable pulse
generator. The width, PW
A
, depends on the address code (A5-A0)
according to the following formula:
PW
A
= PW
0
+ T
INC
* A
PIN DESCRIPTIONS
TRIG
OUT
OUT/
A0-A5
RES
VCC
GND
Trigger Input
Non-inverted Output
Inverted Output
Address Bits
Reset
+5 Volts
Ground
where A is the address code, T
INC
is the incremental pulse width of the
device, and PW
0
is the inherent pulse width of the device. The incremental
width is specified by the dash number of the device and can range from 0.5ns through 10ns, inclusively.
RESET is held LOW during normal operation. When it is brought HIGH, OUT and OUT/ are forced into
LOW and HIGH states, respectively, and the unit is ready for the next trigger input. The address is not
latched and must remain asserted while the output pulse is active.
SERIES SPECIFICATIONS
•
•
•
•
•
•
Programmed pulse width tolerance:
5% or 2ns,
whichever is greater
Inherent width (PW
0
):
12ns typical
Inherent delay (T
TO
):
3.5ns
±
2ns
Operating temperature:
0° to 70° C
Supply voltage V
CC
:
5VDC
±
5%
Supply current:
I
CC
= 60ma typical
DASH NUMBER SPECIFICATIONS
Part
Number
PPG36F-.5
PPG36F-1
PPG36F-2
PPG36F-3
PPG36F-4
PPG36F-5
PPG36F-6
PPG36F-7
PPG36F-8
PPG36F-9
PPG36F-10
Incremental Width
Per Step (ns)
0.5
±
0.3
1
±
0.5
2
±
0.5
3
±
1.0
4
±
1.0
5
±
1.5
6
±
1.5
7
±
1.5
8
±
2.0
9
±
2.0
10
±
2.0
Total Width
Change (ns)
31.5
±
2.00
63.0
±
3.15
126.0
±
6.30
189.0
±
9.45
252.0
±
12.6
315.0
±
15.8
378.0
±
18.9
441.0
±
22.1
504.0
±
25.2
567.0
±
28.4
630.0
±
31.5
©
1997 Data Delay Devices
NOTE: Any dash number between .5 and 10 not
shown is also available.
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1
PPG36F
APPLICATION NOTES
DEVICE TIMING
The timing definitions and restrictions for the
PPG36F are shown in Figure 1. The unit is
activated by a rising edge on the TRIG input.
After a time, T
TO
(called the inherent delay), the
rising edge of the pulse appears at OUT. The
duration of the pulse is given by the above
equation. For the duration of the pulse, the
device ignores subsequent triggers. Once the
falling edge of the pulse has appeared at OUT,
an additional time, T
OTR
, is required before the
device can respond to the next trigger.
At power-up, the state of the PPG36F is
unknown. Consequently, after power is applied,
the unit may not respond to input triggers for a
time equal to the maximum pulse width, PW
T
.
After this time, the unit will function properly. If
your application requires that the device function
immediately, issue a quick reset at power-up.
POWER SUPPLY BYPASSING
The PPG36F relies on a stable power supply to
produce repeatable pulses within the stated
tolerances. A 0.1uf capacitor from VCC to GND,
located as close as possible to each VCC pin, is
recommended. A wide VCC trace should
connect all VCC pins externally, and a clean
ground plane should be used.
INCREMENT TOLERANCES
Please note that the increment tolerances listed
represent a design goal. Although most
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
A
i
T
RW
T
OAX
T
ATS
A
i+1
RES
T
RTS
TRIG
T
TO
OUT
T
SKEW
OUT/
Figure 1: Timing Diagram
T
RO
T
OTR
PW
A
T
TW
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
Tel: 973-773-2299
Fax: 973-773-9672
http://www.datadelay.com
2
PPG36F
DEVICE SPECIFICATIONS
TABLE 1: AC CHARACTERISTICS
PARAMETER
Total Programmable Pulse Width
Inherent Pulse Width
Trigger to Output Delay
Reset to Output Delay
Output Skew
Trigger Pulse Width
Reset Pulse Width
Reset to Trigger Setup Time
Address to Trigger Setup Time
Output Low to Address Change
Output to Trigger Recovery Time
*or 10ns, whichever is greater
SYMBOL
PW
T
PW
0
T
TO
T
RO
T
SKEW
T
TW
T
RW
T
RTS
T
ATS
T
OAX
T
OTR
MIN
8.0
1.5
TYP
63
12.0
3.5
1.5
5.0
10.0
9.0
6.0
0.0
15
MAX
16.0
5.5
17.0
UNITS
T
INC
ns
ns
ns
ns
ns
ns
ns
ns
ns
% of PW
T
TABLE 2: ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
Input Pin Voltage
Storage Temperature
Lead Temperature
SYMBOL
V
CC
V
IN
T
STRG
T
LEAD
MIN
-0.3
-0.3
-55
MAX
7.0
V
DD
+0.3
150
300
UNITS
V
V
C
C
NOTES
10 sec
TABLE 3: DC ELECTRICAL CHARACTERISTICS
(0C to 70C, 4.75V to 5.25V)
PARAMETER
High Level Output Voltage
Low Level Output Voltage
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
SYMBOL
V
OH
V
OL
I
OH
I
OL
V
IH
V
IL
V
IK
I
IHH
I
IH
I
IL
I
OS
MIN
2.5
TYP
3.4
0.35
MAX
UNITS
V
V
mA
mA
V
V
V
mA
µA
mA
mA
Unit
Load
NOTES
V
CC
= MIN, I
OH
= MAX
V
IH
= MIN, V
IL
= MAX
V
CC
= MIN, I
OL
= MAX
V
IH
= MIN, V
IL
= MAX
0.5
-1.0
20.0
2.0
0.8
-1.2
0.1
20
-0.6
-150
25
12.5
V
CC
= MIN, I
I
= I
IK
V
CC
= MAX, V
I
= 7.0V
V
CC
= MAX, V
I
= 2.7V
V
CC
= MAX, V
I
= 0.5V
V
CC
= MAX
-60
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
3
PPG36F
PACKAGE DIMENSIONS
24 23 22 21 20 19 18 17 16 15 14 13
.580
MAX.
.010
±.002
1
2
3
4
5
6
7
8
9 10 11 12
.600
±.005
1.270±.010
Lead Material:
Nickel-Iron alloy 42
TIN PLATE
.380
MAX.
.015 TYP.
.018 TYP.
1.100±.010
11 Equal spaces
each .100±.010
Non-Accumulative
.070 MAX.
DIP (PPG36F-xx, PPG36F-xxM)
.020 TYP.
.040 TYP.
.010±.002
24 23 22 21 20 19 18 17 16 15 14 13
.710 .590
±.005
MAX.
.882
±.005
.007
±.005
1
2
3
4
5
6
7
8
9
10 11 12
.090
1.100
1.280±.020
.100
.280
MAX.
.050
±.010
Gull-Wing (PPG36F-xxC4, PPG36F-xxMC4)
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
Tel: 973-773-2299
Fax: 973-773-9672
http://www.datadelay.com
4
PPG36F
DELAY LINE AUTOMATED TESTING
TEST CONDITIONS
INPUT:
o
o
Ambient Temperature:
25 C
±
3 C
Supply Voltage (Vcc):
5.0V
±
0.1V
Input Pulse:
High = 3.0V
±
0.1V
Low = 0.0V
±
0.1V
Source Impedance:
50Ω Max.
Rise/Fall Time:
3.0 ns Max. (measured
between 0.6V and 2.4V )
Pulse Width:
PW
IN
= 10ns
Period:
PER
IN
= 2 x Max. Pulse Width
OUTPUT:
Load:
C
load
:
Threshold:
1 FAST-TTL Gate
5pf
±
10%
1.5V (Rising & Falling)
NOTE:
The above conditions are for test only and do not in any way restrict the operation of the device.
COMPUTER
SYSTEM
PRINTER
REF
PULSE
GENERATOR
OUT
TRIG
IN
DEVICE UNDER
TEST (DUT)
OUT
IN
TRIG
TIME INTERVAL
COUNTER
Test Setup
PER
IN
PW
IN
T
RISE
INPUT
SIGNAL
2.4V
1.5V
0.6V
T
FALL
V
IH
2.4V
1.5V
0.6V
V
IL
T
TO
OUTPUT
SIGNAL
1.5V
PW
A
V
OH
1.5V
V
OL
Timing Diagram For Testing
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
5
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