SCAN18373TSSC Fairchild Semiconductor, SCAN18373TSSC Datasheet

no-image

SCAN18373TSSC

Manufacturer Part Number
SCAN18373TSSC
Description
TRANSPARENT LATCH 9-BIT 56-SSOP
Manufacturer
Fairchild Semiconductor
Series
SCANr
Datasheet

Specifications of SCAN18373TSSC

Logic Type
D-Type Transparent Latch
Circuit
9:9
Output Type
Tri-State
Voltage - Supply
4.5 V ~ 5.5 V
Independent Circuits
2
Delay Time - Propagation
2.5ns
Current - Output High, Low
24mA, 48mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
56-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
© 2000 Fairchild Semiconductor Corporation
SCAN1837TSSC
SCAN18373T
Transparent Latch with 3-STATE Outputs
General Description
The SCAN18373T is a high speed, low-power transparent
latch featuring separate data inputs organized into dual 9-
bit bytes with byte-oriented latch enable and output enable
control signals. This device is compliant with IEEE 1149.1
Standard Test Access Port and Boundary Scan Architec-
ture 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).
Ordering Code:
Device also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Order Number
Package Number
MS56A
56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide
DS010962
Features
Pin Descriptions
Truth Tables
H
L
X
Z
AO
BO
AI
ALE, BLE
AOE
AO
IEEE 1149.1 (JTAG) Compliant
Buffered active-low latch enable
3-STATE outputs for bus-oriented applications
9-bit data busses for parity applications
Reduced-swing outputs source 32 mA/sink 64 mA
Guaranteed to drive 50
levels of 0.8V and 2.0V
TTL compatible inputs
25 mil pitch SSOP (Shrink Small Outline Package)
Includes CLAMP and HIGHZ instructions
Member of Fairchild’s SCAN Products
0
0
LOW Voltage Level
(0–8)
Immaterial
High Impedance
HIGH Voltage Level
(0–8)
ALE
BLE
Previous AO before H-to-L transition of ALE
Previous BO before H-to-L transition of BLE
Pin Names
1
H
H
H
H
X
L
X
L
, BOE
Package Description
, BI
, BO
(0–8)
1
(0–8)
AOE
BOE
H
H
L
L
L
L
L
L
Inputs
Inputs
1
1
Data Inputs
Latch Enable Inputs
3-STATE Output Enable Inputs
3-STATE Latch Outputs
transmission line to TTL input
October 1991
Revised May 2000
AI
BI
Description
(0–8)
(0–8)
X
H
X
X
H
X
L
L
www.fairchildsemi.com
AO
BO
AO
BO
H
H
Z
L
Z
L
(0–8)
(0–8)
0
0

Related parts for SCAN18373TSSC

SCAN18373TSSC Summary of contents

Page 1

... Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide Device also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram © 2000 Fairchild Semiconductor Corporation Features IEEE 1149.1 (JTAG) Compliant Buffered active-low latch enable ...

Page 2

Functional Description The SCAN18373T consists of two sets of nine D-type latches with 3-STATE standard outputs. When the Latch Enable (ALE or BLE) input is HIGH, data on the inputs ( enters the latches. In this condition ...

Page 3

Block Diagrams (Continued) Note: BSR stands for Boundary Scan Register. Tap Controller Byte-B 3 www.fairchildsemi.com ...

Page 4

Description of Boundary-Scan Circuitry The scan cells used in the BOUNDARY-SCAN register are one of the following two types depending upon their loca- tion. Scan cell TYPE1 is intended to solely observe system data, while TYPE2 has the additional ability ...

Page 5

Description of Boundary-Scan Circuitry Scan Chain Definition (42 Bits in Length) (Continued) Boundary-Scan Register 5 www.fairchildsemi.com ...

Page 6

Description of Boundary-Scan Circuitry Boundary-Scan Register Definition Index Bit No. Pin Name 41 AOE 1 40 ACP 39 AOE 38 BOE 1 37 BCP 36 BOE ...

Page 7

Absolute Maximum Ratings Supply Voltage ( Input Diode Current ( 0. 0. Output Diode Current ( 0. 0. Output ...

Page 8

DC Electrical Characteristics Symbol Parameter I Maximum I per Input CCt CC Note 2: All outputs loaded; thresholds associated with output under test. Note 3: Maximum test duration 2.0 ms, one output loaded at a time. Noise Specifications Symbol Parameter ...

Page 9

AC Operating Requirements Normal Operation Symbol Parameter t Setup Time Data Hold Time Data t LE Pulse Width W Note 9: Voltage Range 5.0 is 5.0V 0.5V. ...

Page 10

AC Operating Requirements Scan Test Operation Symbol Parameter t Setup Time, S Data to TCK (Note 12) t Hold Time, H TCK to Data (Note 12) t Setup Time AOE , BOE to TCK (Note 13) ...

Page 11

Extended AC Electrical Characteristics Symbol Parameter t Propagation Delay PLH t Latch Enable to Output PHL t Propagation Delay PLH t Data to Output PHL t Output Enable Time PZH t PZL t Output Disable Time PHZ t PLZ t ...

Page 12

Physical Dimensions inches (millimeters) unless otherwise noted 56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

Related keywords