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74ABT834D 데이터시트(PDF) 1 Page - NXP Semiconductors

부품명 74ABT834D
상세설명  Octal inverting transceiver with parity generator/checker 3-State
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제조업체  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

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Philips Semiconductors Advanced BiCMOS Products
Objective specification
74ABT834
Octal inverting transceiver with parity
generator/checker (3–State)
1
June 9, 1992
FEATURES
Low static and dynamic power dissipation
with high speed and high output drive
Open–collector ERROR output
Output capability: +64mA/–32mA
Latch–up protection exceeds 500mA per
Jedec JC40.2 Std 17
ESD protection exceeds 2000 V per MIL
STD 883C Method 3015.6 and 200 V per
Machine Model
Power up/down 3–State
DESCRIPTION
The 74ABT834 high–performance BiCMOS
device combines low static and dynamic
power dissipation with high speed and high
output drive.
The 74ABT834 is an octal inverting
transceiver with a parity generator/checker
and is intended for bus–oriented applications.
When Output Enable A (OEA) is High, it will
place the A outputs in a high impedance
state. Output Enable B (OEB) controls the B
outputs in the same way.
The parity generator creates an odd parity
output (PARITY) when OEB is Low. When
OEA is Low, the parity of the B port, including
the PARITY input, is checked for odd parity.
When an error is detected, the error data is
sent to the input of a storage register. If a
Low–to–High transition happens at the clock
input (CP), the error data is stored in the
register and the Open–collector error flag
(ERROR) will go Low. The error flag register
is cleared with a Low pulse on the CLEAR
input.
If both OEA and OEB are Low, data will flow
from the A bus to the B bus and the part is
forced into an error condition which creates
an inverted PARITY output. This error
condition can be used by the designer for
system diagnostics.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
Tamb = 25°C; GND = 0V
TYPICAL
UNIT
tPLH
tPHL
Propagation delay
An to Bn or Bn to An
CL = 50pF; VCC = 5V
3.4
ns
tPLH
tPHL
Propagation delay
An to PARITY
CL = 50pF; VCC = 5V
7.4
ns
CIN
Input capacitance
VI = 0V or VCC
4
pF
COUT
Output capacitance
VI = 0V or VCC
7
pF
ICCZ
Total supply current
Outputs disabled; VCC =5.5V
50
µA
ORDERING INFORMATION
PACKAGES
CONDITIONS
Tamb = 25°C; GND = 0V
ORDER CODE
24–pin plastic DIP (300mil)
–40
°C to +85°C
74ABT834N
24–pin plastic SOL (300mil)
–40
°C to +85°C
74ABT834D
PIN CONFIGURATION
LOGIC SYMBOL
24
23
22
21
20
19
18
17
16
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
VCC
GND
CLEAR
OEA
B0
B1
B2
B3
B6
B7
PARITY
OEB
A0
A1
A2
A3
A4
A5
A6
A7
ERROR
CP
B4
B5
OEB
OEA
CLEAR
14
1
11
15
10
PARITY
ERROR
TOP VIEW
CP
13
2
3
4
5
6
7
8
9
A0 A1 A2 A3 A4 A5 A6 A7
B0 B1 B2 B3 B4 B5 B6 B7
23 22 21 20 19 18 17 16


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