74AC280 STMicroelectronics, 74AC280 Datasheet

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74AC280

Manufacturer Part Number
74AC280
Description
9 BIT PARITY GENERATOR
Manufacturer
STMicroelectronics
Datasheet

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Part Number:
74AC280MTR
Manufacturer:
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DESCRIPTION
The AC280 is an advanced high-speed CMOS 9
BIT PARITY GENERATOR fabricated with
sub-micron silicon gate and double-layer metal
wiring C
power
operation similar to equivalent Bipolar Schottky
TTL.
It is composed of nine data inputs (A to I) and
PIN CONNECTION AND IEC LOGIC SYMBOLS
December 1998
HIGH SPEED: t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
50 TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 280
IMPROVED LATCH-UP IMMUNITY
CC
PLH
OH
NIH
CC
= 4 A (MAX.) at T
| = I
(OPR) = 2V to 6V
= V
t
applications mantaining high
2
PHL
OL
MOS technology. It is ideal for low
NIL
= 24 mA (MIN)
= 28% V
PD
= 4 ns (TYP.) at V
CC
A
(MIN.)
= 25
o
C
CC
= 5V
speed
www.DataSheet4U.com
9 BIT PARITY GENERATOR
odd/even parity outputs ( ODD and EVEN). The
nine data inputs control the output conditions.
When the number of high level input is odd,
Conservely, when the output is even,
output is kept high and ODD low.
The IC generates either odd or even parity
making it flexible application.
The word-length capability is easily expanded by
cascading.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
ODD output is kept high and EVEN output low.
(Plastic Package)
74AC280B
B
ORDER CODES :
(Micro Package)
74AC280
74AC280M
M
EVEN
1/8

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74AC280 Summary of contents

Page 1

... The IC generates either odd or even parity making it flexible application. The word-length capability is easily expanded by www.DataSheet4U.com cascading. All inputs and outputs are equipped with protection circuits against static discharge, giving speed them 2KV ESD immunity and transient excess voltage. 74AC280 M (Micro Package) 74AC280M EVEN 1/8 ...

Page 2

... INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE NUMBER OF INPUTS A THRU I THAT ARE HIGH LOGIC DIAGRAM 2/8 PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCT ION 5, 6 EVEN Parity Outputs ODD 8, 9, 10, 11 Data Inputs 12, 13 ...

Page 3

... RECOMMENDED OPERATING CONDITIONS Symbol Parameter V Supply Voltage CC V Input Voltage I V Output Voltage O T Operating Temperature: op dt/dv Input Rise and Fall Time from 30% to70% 3.0, 4.5 or 5.5 V(note 1) CC 74AC280 Value Unit - 200 mA o -65 to +150 ...

Page 4

... DC SPECIFICATIONS Symb ol Parameter V High Level Input Voltage IH V Low Level Input Voltage IL V High Level Output OH Voltage V Low Level Output OL Voltage I Input Leakage Current I I Quiescent Supply CC Current I Dynamic Output Current OLD (note OHD 1) Maximum test duration 2ms, one output loaded attime 2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50 ...

Page 5

... TEST CIRCUIT equivalent (includes jigand probe capacitance 500 orequivalent pulse generator (typically OUT WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) 74AC280 5/8 ...

Page 6

... Plastic DIP-14 MECHANICAL DATA DIM. MIN. TYP. a1 0. 2.54 e3 15. 1.27 6/8 mm MAX. MIN. 0.020 1.65 0.055 0.5 20 8.5 7.1 5.1 3.3 2.54 0.050 inch TYP. MAX. 0.065 0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.100 P001A ...

Page 7

... MIN. TYP 0 0.35 b1 0. 8.55 E 5.8 e 1.27 e3 7.62 F 3.8 G 4 inch MAX. MIN. TYP. 1.75 0.2 0.003 1.65 0.46 0.013 0.25 0.007 0.019 45 (typ.) 8.75 0.336 6.2 0.228 0.050 0.300 4.0 0.149 5.3 0.181 1.27 0.019 0.68 8 (max.) 74AC280 MAX. 0.068 0.007 0.064 0.018 0.010 0.344 0.244 0.157 0.208 0.050 0.026 P013G 7/8 ...

Page 8

... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice ...

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