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Número de pieza | MC14598B | |
Descripción | 8-Bit Bus-Compatible Latches | |
Fabricantes | ON Semiconductor | |
Logotipo | ||
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No Preview Available ! MC14598B
8−Bit Bus−Compatible
Latches
The MC14598B is an 8−bit latch addressed with an external binary
address. The 8 latch−outputs are high drive, three−state and bus line
compatible. The drive capability allows direct applications with MPU
systems such as the Motorola 6800 family.
The latches of the MC14598B are accessed via the Address pins,
A0, A1, and A2.
All 8 outputs from the latches are available in parallel when Enable
is in the low state. Data is entered into a selected latch from the Data
pin when the Strobe is high. Master reset is available on both parts.
Features
• Serial Data Input
• Three−State Bus Compatible Parallel Outputs
• Three−State Control Pin (Enable) TTL Compatible Input
• Open Drain Full Flag (Multiple Latch Wire−O Ring)
• Master Reset
• Level Shifting Inputs on All Except Enable
• Diode Protection — All Inputs
• Supply Voltage Range — 3.0 Vdc to 18 Vdc
• Capable of Driving TTL Over Rated Temperature Range With
Fanout as Follows: 1 TTL Load
www.DataSheet4U.com
4 LSTTL Loads
• Pb−Free Package is Available*
MAXIMUM RATINGS (Voltages Referenced to VSS)
Parameter
Symbol
Value
Unit
DC Supply Voltage Range
Input Voltage Range, enable
(DC or Transient)
VDD −0.5 to +18.0 V
Vin −0.5 to VDD V
+0.5
Input Voltage Range, all Other Inputs
(DC or Transient)
Vin −0.5 to VDD V
+12
Output Voltage Range, (DC or Transient) Vout −0.5 to VDD V
+0.5
Input or Output Current (DC or Transient) Iin, Iout ±10 mA
per Pin
Power Dissipation per Package (Note 1)
PD
500 mW
Ambient Temperature Range
TA −55 to +125 °C
Storage Temperature Range
Tstg −65 to +150 °C
Lead Temperature (8−Second Soldering)
TL
260 °C
Stresses exceeding Maximum Ratings may damage the device. Maximum
Ratings are stress ratings only. Functional operation above the Recommended
Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
1. Temperature Derating: Plastic “P and D/DW” Packages: – 7.0 mW/_C From
65_C To 125_C
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 6
1
http://onsemi.com
PDIP−18
P SUFFIX
CASE 707
1
MARKING DIAGRAM
18
MC14598BCP
AWLYYWWG
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
OUTPUT TRUTH TABLE
Enable
Outputs
1 High Impedance
0 Dn
Dn = State of nth latch
NC = NO CONNECTION
ORDERING INFORMATION
Device
Package
Shipping
MC14598BCP
PDIP−18 20 Units/Rail
MC14598BCPG
PDIP−18
(Pb−Free)
20 Units/Rail
This device contains protection circuitry to guard
against damage due to high 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, Vin and Vout should be constrained
to the range VSS v (Vin or Vout) v VDD.
Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either VSS or
VDD). Unused outputs must be left open.
Publication Order Number:
MC14598B/D
1 page LATCH TRUTH TABLE
Strobe
Address Other
Reset Latch Latches
01 * *
1 1 Data *
X0 0 0
*= No change in state of latch
X = Don’t care
MC14598B
Increment
X
X
X
TRUTH TABLE FOR MC14597B
Enable Reset
Address
Counter
X 1 Count Up
X 1 No Change
1 0 Reset to Zero
0 1 No Change
If at
1 1 ADDRESS 7
X = Don’t care
Full
−
−
Set to One
Set to One
To Zero on
Falling Edge
of STROBE
TEST LOAD, ALL OUTPUTS
+5.0 V
RL = 2.5 k
Dn
130 pF
11.7 k
Circuit diagrams external to or containing Motorola
products are included as a means of illustration only.
Complete information sufficient for construction purposes
may not be fully illustrated. Although the information herein
has been carefully checked and is believed to be reliable.
Motorola assumes no responsibility for inaccuracies.
Information herein does not convey to the purchaser any
license under the patent rights of Motorola or others.
The information contained herein is for guidance only,
with no warranty of any type, expressed or implied.
Motorola reserves the right to make any changes to the
information and the product(s) to which the information
applies and to discontinue manufacture of the product(s) at
any time.
http://onsemi.com
5
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet MC14598B.PDF ] |
Número de pieza | Descripción | Fabricantes |
MC14598B | (MC14597B / MC14598B) 8-Bit Bus-Compatible Latches | Motorola Semiconductors |
MC14598B | 8-Bit Bus-Compatible Latches | ON Semiconductor |
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