GS74108ATP/J/X
512K x 8
4Mb Asynchronous SRAM
8, 10, 12 ns
3.3 V VDD
Center VDD and VSS
SOJ, TSOP, FP-BGA
Commercial Temp
Industrial Temp
Rev: 1.06 12/2004 1/13 © 2001, Giga Semiconductor, Inc.
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Features
• Fast access time: 8, 10, 12 ns
• CMOS low power operation: 120/95/85 mA at minimum
cycle time
• Single 3.3 V power supply
• All inputs and outputs are TTL-compatible
• Fully static operation
• Industrial Temperature Option: –40° to 85°C
• Package line up
J: 400 mil, 36-pin SOJ package
TP: 400 mil, 44-pin TSOP Type II package
GP: Pb-Free 400 mil, 44-pin TSOP Type II package
X: 6 mm x 10 mm Fine Pitch Ball Grid Array
package
GX: Pb-Free 6 mm x 10 mm Fine Pitch Ball Grid Array
package
• Pb-Free TSOP-II and FP-BGA packages available
Description
The GS74108A is a high speed CMOS Static RAM organized
as 524,288 words by 8 bits. Static design eliminates the need
for external clocks or timing strobes. The GS74108A operates
on a single 3.3 V power supply and all inputs and outputs are
TTL-compatible. The GS74108A is available in 400 mil SOJ,
400 mil TSOP Type-II, and 6 mm x 10 mm FP-BGA packages.
SOJ 512K x 8-Pin Configuration
FP-BGA 512K x 8 Bump Configuration (Package X)
6 x 10 mm
Pin Descriptions
Symbol Description
A0–A18 Address input
DQ1–DQ8Data input/output
CE Chip enable input
WE Write enable input
OE Output enable input
VDD +3.3 V power supply
VSS Ground
NC No connect
123456
ANCOE
A2A6A7NC
BDQ
1NC A1A5CE DQ8
CDQ2NC A0A4NC DQ7
DVSS NC A18 A3NC VDD
EVDD NC A17 A9NC VSS
FDQ3NC A13 A10 NC DQ6
GDQ4NC A14 A11 WE DQ5
HNCA16 A15 A12 A8NC
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A4
A3
A2
A1
A0
CE
DQ1
DQ2
VDD
VSS
DQ3
DQ4
WE
A17
A16
A15
NC
A5
A6
A7
A8
OE
DQ8
DQ7
VSS
VDD
DQ6
DQ5
A9
A10
A11
A12
36-pin
400 mil SOJ
17
18
A14
A13
20
19 NC
A18
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 2/13 © 2001, Giga Semiconductor, Inc.
TSOP-II 512K x 8-Pin Configuration
Block Diagram
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
A4
A3
A2
A1
A0
CE
DQ1
DQ2
VDD
VSS
DQ3
DQ4
WE
NC
A5
A6
A7
A8
OE
DQ8
DQ7
VSS
VDD
DQ6
DQ5
A10
A11
A12
A18
44-pin
400 mil TSOP II
19
20
26
25 NC
21
22
NC
NC
24
23
NC
NC
1
2
NC
NC
44
43
NC
NC
A9
A13
A17
A16
A15
A14
Memory Array
Row
Decoder
Column
Decoder
Address
Input
Buffer
Control I/O Buffer
A0
CE
WE
OE
DQ1
A18
DQ8
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 3/13 © 2001, Giga Semiconductor, Inc.
Note:
X: “H” or “L”
Note:
Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Functional operation shall be restricted to Recommended
Operating Conditions. Exposure to higher than recommended voltages for extended periods of time could affect device reliability.
Notes:
1. Input overshoot voltage should be less than VDD +2 V and not exceed 20 ns.
2. Input undershoot voltage should be greater than –2 V and not exceed 20 ns.
Truth Table
CE OE WE DQ1 to DQ8VDD Current
H X X Not Selected ISB1, ISB2
L L H Read
IDDLX L Write
LH H High Z
Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply Voltage VDD –0.5 to +4.6 V
Input Voltage VIN –0.5 to VDD +0.5
(≤ 4.6 V max.) V
Output Voltage VOUT –0.5 to VDD +0.5
(≤ 4.6 V max.) V
Allowable power dissipation PD 0.7 W
Storage temperature TSTG –55 to 150 oC
Recommended Operating Conditions
Parameter Symbol Min Typ Max Unit
Supply Voltage for -8/-10/-12 VDD 3.0 3.3 3.6 V
Input High Voltage VIH 2.0 — VDD +0.3 V
Input Low Voltage VIL –0.3 — 0.8 V
Ambient Temperature,
Commercial Range TAc 0—70
oC
Ambient Temperature,
Industrial Range TAI–40 — 85 oC
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 4/13 © 2001, Giga Semiconductor, Inc.
Notes:
1. Tested at TA = 25°C, f = 1 MHz
2. These parameters are sampled and are not 100% tested.
Capacitance
Parameter Symbol Test Condition Max Unit
Input Capacitance CIN VIN = 0 V 5 pF
Output Capacitance COUT VOUT = 0 V 7 pF
DC I/O Pin Characteristics
Parameter Symbol Test Conditions Min Max
Input Leakage
Current IIL VIN = 0 to VDD – 1 uA 1 uA
Output Leakage
Current ILO Output High Z
VOUT = 0 to VDD –1 uA 1 uA
Output High Voltage VOH IOH = –4 mA 2.4 —
Output Low Voltage VOL ILO = +4 mA — 0.4 V
Power Supply Currents
Parameter Symbol Test Conditions
0 to 70°C –40 to 85°C
8 ns 10 ns 12 ns 8 ns 10 ns 12 ns
Operating
Supply
Current
IDD
CE ≤ VIL
All other inputs
≥ VIH or ≤ VIL
Min. cycle time
IOUT = 0 mA
120 mA 95 mA 85 mA 130 mA 105 mA 95 mA
Standby
Current ISB1
CE ≥ VIH
All other inputs
≥ VIH or ≤VIL
Min. cycle time
30 mA 25 mA 22 mA 40 mA 35 mA 32 mA
Standby
Current ISB2
CE ≥ VDD - 0.2V
All other inputs
≥ VDD - 0.2V or ≤ 0.2V
10 mA 20 mA
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 5/13 © 2001, Giga Semiconductor, Inc.
AC Test Conditions
AC Characteristics
* These parameters are sampled and are not 100% tested.
Read Cycle
Parameter Symbol
-8 -10 -12
Unit
Min Max Min Max Min Max
Read cycle time tRC 8 — 10 — 12 — ns
Address access time tAA — 8 — 10 — 12 ns
Chip enable access time (CE)tAC — 8 — 10 — 12 ns
Output enable to output valid (OE)tOE —3.5— 4 — 5 ns
Output hold from address change tOH 3—3—3— ns
Chip enable to output in low Z (CE)tLZ*3—3—3— ns
Output enable to output in low Z (OE)tOLZ*0—0—0— ns
Chip disable to output in High Z (CE)tHZ*—4—5—6 ns
Output disable to output in High Z (OE)tOHZ*—3.5— 4 — 5 ns
DQ
VT = 1.4 V
50Ω30pF1
DQ
3.3 V
Output Load 1
Output Load 2
589Ω
434Ω
5pF1
Notes:
1. Include scope and jig capacitance.
2. Test conditions as specified with output loading as shown in Fig. 1
unless otherwise noted.
3. Output load 2 for tLZ, tHZ, tOLZ and tOHZ
Parameter Conditions
Input high level VIH = 2.4 V
Input low level VIL = 0.4 V
Input rise time tr = 1 V/ns
Input fall time tf = 1 V/ns
Input reference level 1.4 V
Output reference level 1.4 V
Output load Fig. 1& 2
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 6/13 © 2001, Giga Semiconductor, Inc.
Read Cycle 1: CE = OE = VIL, WE = VIH
Read Cycle 2: WE = VIH
tAA
tOH
tRC
Address
Data Out Previous Data Data valid
tAA
tRC
Address
tAC
tLZ
tOE
tOLZ
CE
OE
Data Out
tHZ
tOHZ
DATA VALID
High impedance
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 7/13 © 2001, Giga Semiconductor, Inc.
* These parameters are sampled and are not 100% tested.
Write Cycle 1: WE control
Write Cycle
Parameter Symbol
-8 -10 -12
Unit
Min Max Min Max Min Max
Write cycle time tWC 8 — 10 — 12 — ns
Address valid to end of write tAW 5.5 — 7 — 8 — ns
Chip enable to end of write tCW 5.5 — 7 — 8 — ns
Data set up time tDW 4 — 5 — 6 — ns
Data hold time tDH 0 — 0 — 0 — ns
Write pulse width tWP 5.5 — 7 — 8 — ns
Address set up time tAS 0 — 0 — 0 — ns
Write recovery time (WE) tWR 0—0—0— ns
Write recovery time (CE)tWR10—0—0—ns
Output Low Z from end of write tWLZ*3—3—3— ns
Write to output in High Z tWHZ*—3.5—4—5 ns
tWC
Address
CE
WE
Data In
OE
Data Out
tAW
tCW
tAS tWP
tWR
tDW tDH
tWLZtWHZ
DATA VALID
HIGH IMPEDANCE
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 8/13 © 2001, Giga Semiconductor, Inc.
Write Cycle 2: CE control
36-Pin SOJ, 400 mil
tWC
Address
CE
WE
Data In
OE
Data Out
tAW
tWP
tAS tCW
tWR1
tDW tDH
DATA VALID
HIGH IMPEDANCE
1e
B1
D
A1 A2
y
E
HE
Q
c
L
GE
Detail A
A
B
A
Notes:
1. Dimension D& E do not include interlead flash.
2. Dimension B1 does not include dambar protrusion/intrusion.
Symbol
Dimension in inch Dimension in mm
min nom max min nom max
A — — 0.146 — — 3.70
A1 0.026 — — 0.66 — —
A2 0.105 0.110 0.115 2.67 2.80 2.92
B 0.013 0.017 0.021 0.33 0.43 0.53
B1 0.024 0.028 0.032 0.61 0.71 0.81
c 0.006 0.008 0.012 0.15 0.20 0.30
D 0.920 0.924 0.929 23.37 23.47 23.60
E 0.395 0.400 0.405 10.04 10.16 10.28
e — 0.05 — — 1.27 —
HE0.430 0.435 0.440 10.93 11.05 11.17
GE0.354 0.366 0.378 9.00 9.30 9.60
L 0.082 — — 2.08 — —
y — — 0.004 — — 0.10
Q0o—10o0o—10o
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 9/13 © 2001, Giga Semiconductor, Inc.
44-Pin, 400 mil TSOP-II
D
122
2344
eB
Q
A
A1 A2
y
c
Detail A
E
HE
L
L1
A
Notes:
1. Dimension D& E do not include interlead flash.
2. Dimension B does not include dambar protrusion/intrusion.
3. Controlling dimension: mm
Symbol
Dimension in inch Dimension in mm
min nom max min nom max
A — — 0.047 — — 1.20
A1 0.002 — — 0.05 — —
A2 0.037 0.039 0.041 0.95 1.00 1.05
B 0.01 0.014 0.018 0.25 0.35 0.45
c — 0.006 — — 0.15 —
D 0.721 0.725 0.729 18.31 18.41 18.51
E 0.396 0.400 0.404 10.06 10.16 10.26
e — 0.031 — — 0.80 —
HE0.455 0.463 0.471 11.56 11.76 11.96
L 0.016 0.020 0.024 0.40 0.50 0.60
L1 — 0.031 — — 0.80 —
y — — 0.004 — — 0.10
Q0o—5o0o—5o
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 10/13 © 2001, Giga Semiconductor, Inc.
6 mm x 10 mm FP-BGA
Pin A1
Index
A1
E
Top View
Side View
D
A
aaa
Pin A1
Index
E1
Bottom View
D1
c
e
e
Solder Ballfb
Symbol Unit: mm
A 1.10±0.10
A1 0.20~0.30
fbf0.30~0.40
c 0.36(TYP)
D 10.0±0.05
D1 5.25
E 6.0±0.05
E1 3.75
e 0.75(TYP)
aaa 0.10
A B C D E F G H
1
2
3
4
5
6
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 11/13 © 2001, Giga Semiconductor, Inc.
Ordering Information
Part Number*Package Access Time Temp. Range Status
GS74108ATP-8 400 mil TSOP-II 8 ns Commercial
GS74108ATP-10 400 mil TSOP-II 10 ns Commercial
GS74108ATP-12 400 mil TSOP-II 12 ns Commercial
GS74108ATP-8I 400 mil TSOP-II 8 ns Industrial
GS74108ATP-10I 400 mil TSOP-II 10 ns Industrial
GS74108ATP-12I 400 mil TSOP-II 12 ns Industrial
GS74108AGP-8 Pb-free 400 mil TSOP-II 8 ns Commercial
GS74108AGP-10 Pb-free 400 mil TSOP-II 10 ns Commercial
GS74108AGP-12 Pb-free 400 mil TSOP-II 12 ns Commercial
GS74108AGP-8I Pb-free 400 mil TSOP-II 8 ns Industrial
GS74108AGP-10I Pb-free 400 mil TSOP-II 10 ns Industrial
GS74108AGP-12I Pb-free 400 mil TSOP-II 12 ns Industrial
GS74108AJ-8 400 mil SOJ 8 ns Commercial
GS74108AJ-10 400 mil SOJ 10 ns Commercial
GS74108AJ-12 400 mil SOJ 12 ns Commercial
GS74108AJ-8I 400 mil SOJ 8 ns Industrial
GS74108AJ-10I 400 mil SOJ 10 ns Industrial
GS74108AJ-12I 400 mil SOJ 12 ns Industrial
GS74108AX-8 6 mm x 10 mm FP-BGA 8 ns Commercial
GS74108AX-10 6 mm x 10 mm FP-BGA 10 ns Commercial
GS74108AX-12 6 mm x 10 mm FP-BGA 12 ns Commercial
GS74108AX-8I 6 mm x 10 mm FP-BGA 8 ns Industrial
GS74108AX-10I 6 mm x 10 mm FP-BGA 10 ns Industrial
GS74108AX-12I 6 mm x 10 mm FP-BGA 12 ns Industrial
GS74108AGX-8 Pb-free 6 mm x 10 mm FP-BGA 8 ns Commercial
GS74108AGX-10 Pb-free 6 mm x 10 mm FP-BGA 10 ns Commercial
GS74108AGX-12 Pb-free 6 mm x 10 mm FP-BGA 12 ns Commercial
GS74108AGX-8I Pb-free 6 mm x 10 mm FP-BGA 8 ns Industrial
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 12/13 © 2001, Giga Semiconductor, Inc.
* Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. For example: GS74108ATP-8T
GS74108AGX-10I Pb-free 6 mm x 10 mm FP-BGA 10 ns Industrial
GS74108AGX-12I Pb-free 6 mm x 10 mm FP-BGA 12 ns Industrial
Ordering Information
Part Number*Package Access Time Temp. Range Status
GS74108ATP/J/X
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.06 12/2004 13/13 © 2001, Giga Semiconductor, Inc.
4M Asynchronous Datasheet Revision History
Rev. Code: Old;
New
Types of Changes
Format or Content Page #/Revisions/Reason
74108A_r1 Format/Content • Creation of new datasheet
74108A_r1; 74108A_r1_01 Content • Added 6 ns speed bin
• Updated all power numbers
74108A_r1_01; 74108A_r1_02 Content
• Updated Recommended Operating Conditions table on page 4
• Added 7 ns bin to entire document
• Added X package
74108A_r1_02; 74108A_r1_03 Content • Removed 6 ns speed bin from entire document
• Corrected “X” package pinout
74108A_r1_03; 74108A_r1_04 Content • Removed 7 ns speed bin from entire document
74108A_r1_04; 74108A_r1_05 Content • Updated format
• Added Pb-free information for TSOP-II package
74108A_r1_05; 74108A_r1_06 Content • Added Pb-free information for FP-BGA package
