MC14557 ONSEMI [ON Semiconductor], MC14557 Datasheet

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MC14557

Manufacturer Part Number
MC14557
Description
1-to-64 Bit Variable Length Shift Register
Manufacturer
ONSEMI [ON Semiconductor]
Datasheet

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MC14557B
1-to-64 Bit Variable Length
Shift Register
may be programmed to be any number of bits between 1 and 64. The
number of bits selected is equal to the sum of the subscripts of the
enabled Length Control inputs (L1, L2, L4, L8, L16, and L32) plus
one. Serial data may be selected from the A or B data inputs with the
A/B select input. This feature is useful for recirculation purposes. A
Clock Enable (CE) input is provided to allow gating of the clock or
negative edge clocking capability.
simply to implement odd length shift registers.
2. Maximum Ratings are those values beyond which damage to the device
3. Temperature Derating:
static voltages or electric fields. However, precautions must be taken to avoid
applications of any voltage higher than maximum rated voltages to this
high–impedance circuit. For proper operation, V
to the range V
either V
MAXIMUM RATINGS
March, 2000 – Rev. 3
Symbol
V
The MC14557B is a static clocked serial shift register whose length
The device can be effectively used for variable digital delay lines or
I
This device contains protection circuitry to guard against damage due to high
Unused inputs must always be tied to an appropriate logic voltage level (e.g.,
Schottky TTL Load Over the Rated Temperature Range
1–64 Bit Programmable Length
Q and Q Serial Buffered Outputs
Asynchronous Master Reset
All Inputs Buffered
No Limit On Clock Rise and Fall Times
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving Two Low–power TTL Loads or one Low–power
in
in
Semiconductor Components Industries, LLC, 2000
may occur.
Plastic “P and D/DW” Packages: – 7.0 mW/ _ C From 65 _ C To 125 _ C
V
T
P
, V
, I
T
T
stg
DD
D
A
L
out
out
SS
or V
DC Supply Voltage Range
Input or Output Voltage Range
Input or Output Current
Power Dissipation,
Ambient Temperature Range
Storage Temperature Range
Lead Temperature
SS
DD
(DC or Transient)
(DC or Transient) per Pin
per Package (Note 3.)
(8–Second Soldering)
v
). Unused outputs must be left open.
(V
in
Parameter
or V
(Voltages Referenced to V
out
)
v
V
DD
.
in
and V
– 0.5 to V
– 0.5 to +18.0
SS
– 55 to +125
– 65 to +150
out
) (Note 2.)
Value
500
260
should be constrained
10
DD
+ 0.5
1
Unit
mW
mA
V
V
C
C
C
1. For ordering information on the EIAJ version of
MC14557BCP
MC14557BDW
MC14557BDWR2
MC14557BF
MC14557BFEL
the SOIC packages, please contact your local
ON Semiconductor representative.
Device
ORDERING INFORMATION
A
WL or L = Wafer Lot
YY or Y = Year
WW or W = Work Week
http://onsemi.com
DW SUFFIX
CASE 751G
SOEIAJ–16
CASE 966
CASE 648
F SUFFIX
P SUFFIX
SOIC–16
SOEIAJ–16
SOEIAJ–16
PDIP–16
= Assembly Location
Package
SOIC–16
SOIC–16
PDIP–16
Publication Order Number:
16
1000/Tape & Reel
16
1
16
1
1
MC14557BCP
DIAGRAMS
See Note 1.
See Note 1.
MARKING
AWLYYWW
MC14557B
AWLYYWW
AWLYWW
Shipping
2000/Box
MC14557B/D
14557B
47/Rail

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MC14557 Summary of contents

Page 1

... MC14557B 1-to-64 Bit Variable Length Shift Register The MC14557B is a static clocked serial shift register whose length may be programmed to be any number of bits between 1 and 64. The number of bits selected is equal to the sum of the subscripts of the enabled Length Control inputs (L1, L2, L4, L8, L16, and L32) plus one ...

Page 2

... MC14557B PIN ASSIGNMENT RESET CLOCK 4 13 L16 L32 A/B SEL SS BLOCK DIAGRAM 3 RESET 4 CLOCK A/B SELECT L16 12 L32 V = PIN PIN 8 SS TRUTH TABLE ...

Page 3

... The formulas given are for the typical characteristics only calculate total supply current at loads other than 50 pF (50 pF – 50) Vfk where (per package pF MC14557B (Voltages Referenced – Vdc Min Max Min V 5.0 — ...

Page 4

... Rise and Fall Time, Reset or CE Removal Time, Reset to Clock The formulas given are for the typical characteristics only Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance. MC14557B = pF, T ...

Page 5

... CLOCK WH(cl) 1/f cl 50% A INPUT t su RESET 1–bit length A PLH L16 = L32 = 0 MC14557B TIMING DIAGRAM TLH THL 90% 50% 10% t PHL http://onsemi.com rem PHL ...

Page 6

... MC14557B LOGIC DIAGRAM http://onsemi.com 6 ...

Page 7

... SEATING e PLANE 14X T MC14557B PDIP–16 P SUFFIX NOTES: CASE 648–08 1. DIMENSIONING AND TOLERANCING PER ANSI ISSUE R Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. ...

Page 8

... A A 0.05 0.20 0.002 0.008 1 b 0.35 0.50 0.014 0.020 c 0.18 0.27 0.007 0.011 D 9.90 10.50 0.390 0.413 E 5.10 5.45 0.201 0.215 e 1.27 BSC 0.050 BSC H 7.40 8.20 0.291 0.323 E L 0.50 0.85 0.020 0.033 L 1.10 1.50 0.043 0.059 0.70 0.90 0.028 0.035 1 Z ––– 0.78 ––– 0.031 MC14557B/D ...

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