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SCAN18245T PDF даташит

Спецификация SCAN18245T изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «Non-Inverting Transceiver with TRI-STATE Outputs».

Детали детали

Номер произв SCAN18245T
Описание Non-Inverting Transceiver with TRI-STATE Outputs
Производители National Semiconductor
логотип National Semiconductor логотип 

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SCAN18245T Даташит, Описание, Даташиты
September 1998
SCAN18245T
Non-Inverting Transceiver with TRI-STATE® Outputs
General Description
The SCAN18245T is a high speed, low-power bidirectional
line driver featuring separate data inputs organized into dual
9-bit bytes with byte-oriented output enable and direction
control signals. This device is compliant with IEEE 1149.1
Standard Test Access Port and Boundary Scan Architecture
with the incorporation of the defined boundary-scan test
logic and test access port consisting of Test Data Input (TDI),
Test Data Out (TDO), Test Mode Select (TMS), and Test
Clock (TCK).
Features
n IEEE 1149.1 (JTAG) Compliant
n Dual output enable control signals
n TRI-STATE outputs for bus-oriented applications
n 9-bit data busses for parity applications
n Reduced-swing outputs source 24 mA/sink 48 mA
n Guaranteed to drive 50transmission line to TTL input
levels of 0.8V and 2.0V
n TTL compatible inputs
n 25 mil pitch Cerpack package
n Includes CLAMP and HIGHZ instructions
n Available as Known Good Die
n Standard Microcircuit Drawing (SMD) 5962-9311501
Connection Diagram
Pin Names
B1(0–8)
A2(0–8)
B2(0–8)
G1, G2
DIR1, DIR2
Description
Side B1 Inputs or TRI-STATE Outputs
Side A2 Inputs or TRI-STATE Outputs
Side B2 Inputs or TRI-STATE Outputs
Output Enable Pins
Direction of Data Flow Pins
DS100320-1
Pin Names
Description
A1(0–8)
Side A1 Inputs or TRI-STATE Outputs
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100320
www.national.com









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SCAN18245T Даташит, Описание, Даташиты
Truth Tables
Inputs
G1 DIR1
LL
LL
LH
LH
HX
A1 B1
(0–8)
(0–8)
HH
LL
HH
LL
ZZ
Inputs
G2 DIR2
LL
LL
LH
LH
A2 B2
(0–8)
(0–8)
HH
LL
HH
LL
HX
Z
Z
H= HIGH Voltage Level
L= LOW Voltage Level
X= Immaterial
Z= High Impedance
Functional Description
The SCAN18245 consists of two sets of nine non-inverting
bidirectional buffers with TRI-STATE outputs and is intended
for bus-oriented applications. Direction pins (DIR1 and DIR2)
LOW enables data from B ports to A ports, when HIGH en-
Block Diagrams
ables data from A ports to B ports. The Output Enable pins
(G1 and G2) when HIGH disables both A and B ports by
placing them in a high impedance condition.
A1, B1, G1 and DIR1
Note: BSR stands for Boundary Scan Register.
www.national.com
2
DS100320-2









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SCAN18245T Даташит, Описание, Даташиты
Block Diagrams (Continued)
Tap Controller
A2, B2, G2 and DIR2
DS100320-3
Note: BSR stands for Boundary Scan Register.
DS100320-4
3 www.national.com










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Номер в каталогеОписаниеПроизводители
SCAN18245TNon-Inverting Transceiver with TRI-STATE OutputsNational Semiconductor
National Semiconductor
SCAN18245TSCAN18245T Non-Inverting Transceiver with TRI-STATE Outputs (Rev. A)Texas Instruments
Texas Instruments
SCAN18245TNon-Inverting TransceiverFairchild Semiconductor
Fairchild Semiconductor

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