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HI-8788 の電気的特性と機能

HI-8788のメーカーはHolt Integrated Circuitsです、この部品の機能は「(HI-8787 / HI-8788) 16-BIT PARALLEL DATA CONVERTED 429&561 SERIAL DATA OUT」です。


製品の詳細 ( Datasheet PDF )

部品番号 HI-8788
部品説明 (HI-8787 / HI-8788) 16-BIT PARALLEL DATA CONVERTED 429&561 SERIAL DATA OUT
メーカ Holt Integrated Circuits
ロゴ Holt Integrated Circuits ロゴ 




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HI-8788 Datasheet, HI-8788 PDF,ピン配置, 機能
HI-8787, HI-8788
January 2001
DESCRIPTION
The HI-8787 and HI-8788 are system components for
interfacing 16 bit parallel data to an ARINC 429 bus. They
combine logic and line driver on one chip. The HI-8787 has
an output resistance of 37.5 ohms, and the HI-8788 has
output resistance of 10 ohms to facilitate external lightning
protection circuitry. The technology is analog/digital
CMOS.
Both products offer high speed data bus transactions into a
buffer register. After loading 2 16-bit words, data is
automatically transferred and transmitted. The data rate is
equal to the clock rate. Parity can be enabled in the 32nd
bit. Reset is used to initialize the logic upon startup. Word
gaps are automatically sent.
The part requires +/- 10 volt supplies in addition to a 5 volt
supply.
PIN CONFIGURATION
D4 - 1
N/C - 2
D5 - 3
D6 - 4
D7 - 5
D8 - 6
D9 - 7
D10 - 8
HI-8787PQI
HI-8787PQT
HI-8788PQI
&
HI-8788PQT
24 - TXBOUT
23 - TXAOUT
22 - V-
21 - PARITY ENB
20 - XMT RDY
19 - XMIT CLK
18 - RESET
17 - WRITE
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FEATURES
32-Pin Plastic TQFP package
l Automatically converts 16 bit parallel data
to ARINC 429 or 561 data
l High speed data bus interface
l On-chip line driver
l Available in small TQFP package
l Military processing options
(DS8787 Rev. B)
HOLT INTEGRATED CIRCUITS
1
01/01

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HI-8788 pdf, ピン配列
WRITE
A0
XMIT CLK
status &
control
logic
DATA 16
BUS
16 to 32 bit
mux
32
32 bit
buffer
register
32
32 bit
shift
register
SLP1.5
word gap
counter
line
driver
XMT RDY
TXAOUT
TXBOUT
bit
counter
output
logic
561 SYNC
561 DATA
PARITY ENB
Figure 1. Block Diagram
FUNCTIONAL DESCRIPTION (Cont.)
The HI-8787 and HI-8788 have an on-chip line driver de-
signed to directly drive the ARINC 429 bus. The two ARINC
outputs (TXAOUT and TXBOUT) provide a differential volt-
age to produce a +10 volt One, a -10 volt Zero, and a 0 volt
Null. The slope of the ARINC outputs is controlled by the
SLP1.5 pin. If SLP1.5 is high, the output rise and fall time is
nominally 1.5µs. .If SLP1.5 is set low, the rise and fall times
are 10µs.
The HI-8787 has 37.5 ohms in series with each line driver
output. The HI-8788 has 10.0 ohms in series. The HI-8788
is for applications where external series resistance is
needed, typically for lightning protection devices.
A0 Load Data Bus
1 Word 1 D0 - D15
0 Word 2 D0 - D15
ARINC Bits
ARINC 1 - ARINC 16
ARINC 17 - ARINC 32
Figure 2. Order of transmitted data
HOLT INTEGRATED CIRCUITS
3


3Pages


HI-8788 電子部品, 半導体
VCC = 5.0V, V+ = 10V, V- = -10V, VSS = 0V, TA =Operating Temperature Range (unless otherwise specified).
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
DATA BUS TIMING
Setup Data Bus to WRITE
Hold WRITE to Data Bus
Hold A0 to WRITE
Pulse width WRITE
Pulse width A0
Delay last WRITE to XMT RDY
LINE DRIVER TIMING
Line Driver propagation delay
Output high to low
Output low to high
tSET
tHLD
tAH
tWPW
tAPW
tXD
tphlx
tplhx
No load
20
0
0
40
40
40
-
-
TYP
500
500
Line Driver transition times
Output high to low
Output low to high
t fx
t rx
SLP1.5 = logic 1
SLP1.5 = logic 1
1.0 1.5
1.0 1.5
Output high to low
Output low to high
t fx SLP1.5 = logic 0
t rx SLP1.5 = logic 0
5 10
5 10
MAX UNITS
ns
ns
ns
ns
ns
ns
- ns
- ns
2.0 µs
2.0 µs
15 µs
15 µs
ORDERING INFORMATION
HI-8787PQI
HI-8787PQT
HI-8788PQI
HI-8788PQT
YES
YES
YES
YES
37.5 ohm
37.5 ohm
10.0 ohm
10.0 ohm
32 Pin Plastic TQFP
32 Pin Plastic TQFP
32 Pin Plastic TQFP
32 Pin Plastic TQFP
-40°C TO +85°C
-55°C TO +125°C
-40°C TO +85°C
-55°C TO +125°C
I SOLDER
T SOLDER
I SOLDER
T SOLDER
HOLT INTEGRATED CIRCUITS
6

6 Page



ページ 合計 : 7 ページ
 
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データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
HI-8783

(HI-8783 - HI-8785) 8 bit parallel data converted to 429 & 561 serial data out

Holt Integrated Circuits
Holt Integrated Circuits
HI-8784

(HI-8783 - HI-8785) 8 bit parallel data converted to 429 & 561 serial data out

Holt Integrated Circuits
Holt Integrated Circuits
HI-8785

(HI-8783 - HI-8785) 8 bit parallel data converted to 429 & 561 serial data out

Holt Integrated Circuits
Holt Integrated Circuits
HI-8787

(HI-8787 / HI-8788) 16-BIT PARALLEL DATA CONVERTED 429&561 SERIAL DATA OUT

Holt Integrated Circuits
Holt Integrated Circuits


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