Thin Film on Silicon 2DTA High Performance Memory Bus Terminator

*R
oH
S
■
■
24Q
DTA
2
005
041
CO
M
PL
IA
NT
Features
■
■
■
Model 2DTA is obsolete and not
recommended for new designs.
Lead free
RoHS compliant*
18 termination channels
Incorporates 36 bidirectional Schottkybased diodes
Small form factor replaces 18 SOT23
packages
■
■
Low forward voltage (2 options available)
Very fast recovery time
Thin Film on Silicon 2DTA High Performance Memory Bus Terminator
General Information
Package Schematic
The Model 2DTA Series High Performance Memory Bus
Terminator is well-suited for high speed bus termination
applications where variable bus loading and very low
terminator power dissipation are required. This very efficient
high speed terminator array is highly integrated and is very
effective for use in space constrained applications such as PC
notebooks and motherboards, engineering workstations and
portable battery powered devices. Two performance options
are available. The higher grade 2DTA-5 with a maximum
forward voltage of 0.75 V is suited for ultra-fast and dense
memory termination configurations. The 2DTA-10, with a
maximum specified forward voltage of 0.85 V is primarily
targeted to general purpose applications where board space is
critical.
VDD
24 23 22
21 20
VDD
19 18
E
T
E
L
O
S
B
O
1
GND
2
3
4
5
6 7
GND
GND
17 16 15 14 13
8
9
10 11
12
VDD
Electrical & Environmental Characteristics
Electrical Characteristics
Symbol
VDD
Channel Clamp Current (continuous)
2DTA-5 Forward Voltage:
@If = 16 mA
@If = 50 mA
2DTA-10 Forward Voltage:
@If = 16 mA
@If = 50 mA
Leakage Current @ Max. VDD
Diode Capacitance
Diode Ohmic Resistance
Charge Carrier Lifetime
Minimum
Nominal
-0.3
IC
Maximum
Unit
+7
±50
V
mA
Vf
Vf
0.4
0.5
0.65
0.75
V
V
Vf
Vf
0.5
0.65
0.1
0.75
0.85
5
5
5
tl
100
V
V
µA
pF
Ω
pS
Environmental Characteristics
ESD Protection (Mil-Std-883 Method 3015)
Operating Temperature
Storage Temperature
Diode Power Rating
TJ
Tstg
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
4
-55
-65
+125
+150
20
KV
°C
°C
mW/diode
Applications
■
■
■
■
High speed synchronous DRAM, SGRAM, SyncLink memory bus termination
High speed SRAM cache
100 MHz PCI and AGP bus termination
Local bus termination for all popular microprocessors
Thin Film on Silicon 2DTA High Performance Memory Bus Terminator
Mechanical Characteristics
QSOP Package Power Temperature Derating Curve
QSOP Package Dimensions
A
.635
TYP.
(.025)
WATTS
1.25
3.81 - 3.99
(.150 - .157)
1.0
2QSP24
.75
.50
.25
0
25
50
75
100
125
150
AMBIENT TEMPERATURE ( ° C )
E
T
E
L
O
S
B
O
Typical Part Marking
.21 - .31
(.008 - .012)
PIN 1
Represents total content. Layout may vary.
1.35 - 1.75
(.053 - .069)
PRODUCT
FUNCTION
FORWARD
VOLTAGE
.10 - .25
(.004 - .010)
DTA24Q
005
YYWW
PIN 1 INDICATOR
(MOLDED INDENT)
PIN COUNT
PACKAGE STYLE
DATE CODE
MANUFACTURER'S
TRADEMARK
.19 - .25
(.007 - .010)
0-8 °
5.80 - 6.20
(.228 - .244)
Model
2QSP24
.41 - 1.27
(.016 - .050)
A
8.56 - 8.74 (.337 - .344)
Governing dimensions are in mm. Dimensions in
parentheses are in inches and are approximate.
JEDEC Reference Number MO-137.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Thin Film on Silicon 2DTA High Performance Memory Bus Terminator
Dispensing
For large quantities, the product will be dispensed in Tape and Reel (see diagram below).
A0
DIMENSIONS = MM (INCHES)
E
T
E
L
O
S
B
O
B0
Package
QSOP
24 Pin
How To Order
K0
A0
B0
K0
Width
Pitch
6.5 (0.256)
9.0 (0.354)
2.1 (0.083)
16 (0.630)
8 (0.315)
No. of Pieces No. of Pieces
per 13 reel
per tube
3,500
56
2 DTA-5 - Q 24 R LF
Product Class
Thin-Film-on-Silicon
Product Function
DTA = Memory Bus Terminator
Forward Voltage (Vf)
(See Electrical Characteristics)
Standard Package Style
Q = QSOP
Pin Count
Q = 24
Dispensing
R = Reel
T = Tube
Terminations
LF = 100 % Sn (lead free)
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
REV. 04/10
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.