TM248NBK36T-80 [TI]

2MX36 FAST PAGE DRAM MODULE, 80ns, SMA72, SIMM-72;
TM248NBK36T-80
型号: TM248NBK36T-80
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

2MX36 FAST PAGE DRAM MODULE, 80ns, SMA72, SIMM-72

动态存储器
文件: 总12页 (文件大小:168K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
Organization  
TM124MBK36E . . . 1 048 576 × 36  
TM248NBK36E . . . 2 097 152 × 36  
Enhanced Page-Mode Operation With  
CAS-Before-RAS, RAS-Only, and Hidden  
Refresh  
Single 5-V Power Supply (±10% Tolerance)  
Presence Detect  
72-Pin Leadless Single-In-Line Memory  
Module (SIMM)  
Performance Ranges:  
ACCESS ACCESS ACCESS READ  
TIME  
TIME  
TIME  
OR  
TM124MBK36E – Utilizes Eight 4-Megabit  
Dynamic RAMs in Plastic Small-Outline  
J-Lead (SOJ) Packages and Two 2-Megabit  
Dual-CAS Dynamic RAMs in Plastic  
t
t
t
WRITE  
CYCLE  
(MIN)  
RAC  
AA  
CAC  
(MAX)  
’124MBK36E-60 60 ns  
’124MBK36E-70 70 ns  
’124MBK36E-80 80 ns  
’248NBK36E-60 60 ns  
’248NBK36E-70 70 ns  
’248NBK36E-80 80 ns  
(MAX)  
30 ns  
35 ns  
40 ns  
30 ns  
35 ns  
40 ns  
(MAX)  
15 ns  
18 ns  
20 ns  
15 ns  
18 ns  
20 ns  
110 ns  
130 ns  
150 ns  
110 ns  
130 ns  
150 ns  
Small-Outline J-Lead (SOJ) Packages  
TM248NBK36E – Utilizes Sixteen 4-Megabit  
Dynamic RAMs in Plastic Small-Outline  
J-Lead (SOJ) Packages and Four 2-Megabit  
Dual-CAS Dynamic RAMs in Plastic  
Low Power Dissipation  
Small-Outline J-Lead (SOJ) Packages  
Operating Free-Air Temperature Range:  
Long Refresh Period . . . 16 ms  
(1024 Cycles)  
0°C to 70°C  
Gold-Tabbed Versions Available:  
– TM124MBK36E  
– TM248NBK36E  
All Inputs, Outputs, Clocks Fully TTL  
Compatible  
3-State Output  
Tin-Lead (Solder) Tabbed Versions  
Available:  
– TM124MBK36T  
Common CAS Control for Nine Common  
Data-In and Data-Out Lines in Four Blocks  
– TM248NBK36T  
description  
The TM124MBK36E is a dynamic random-access memory (RAM) organized as four times 1048576 × 9  
(bit 9 is generally used for parity) in a 72-pin leadless single-in-line memory module (SIMM). The SIMM is  
composed of eight TMS44400DJ, 1 048 576 × 4-bit dynamic RAMs, each in a 20/26-lead plastic small-outline  
J-lead (SOJ) package, and two TMS42260DJ, 1 048 576 × 2-bit dual-CAS dynamic RAMs, each in a 24/26-lead  
plastic small-outline J-lead (SOJ) package, mounted on a substrate with decoupling capacitors. Each  
TMS44400DJ or TMS42260DJ is described in the TMS44400 or TMS42260 data sheet, respectively.  
The TM124MBK36E is available in the single-sided BK leadless module for use with sockets. It features RAS  
access times of 60 ns, 70 ns, and 80 ns. This device is characterized for operation from 0°C to 70°C.  
The TM248NBK36E is a dynamic random-access memory (RAM) organized as four times 2 097 152 × 9 (bit 9  
is generally used for parity) in a 72-pin leadless single-in-line memory module (SIMM). The SIMM is composed  
of sixteen TMS44400DJ, 1 048 576 × 4-bit dynamic RAMs, each in a 20/26-lead plastic small-outline J-lead  
(SOJ)package, andfourTMS42260DJ, 1 048 576× 2-bitdual-CASdynamicRAMs, eachina24/26-leadplastic  
small-outline J-lead (SOJ) package, mounted on a substrate with decoupling capacitors. Each TMS44400DJ  
or TMS42260DJ is described in the TMS44400 or TMS42260 data sheet, respectively.  
The TM248NBK36E is available in the double-sided BK leadless module for use with sockets. It features RAS  
access times of 60 ns, 70 ns, and 80 ns. This device is rated for operation from 0°C to 70°C.  
Part numbers in this data sheet are for the gold-tabbed version; the information applies to both gold-tabbed and solder-tabbed versions.  
Copyright 1994, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
operation  
The TM124MBK36E operates as eight TMS44400DJs and two TMS42260DJs connected as shown in the  
functional block diagram and Table 1. The common I/O feature dictates the use of early write cycles to prevent  
contention on D and Q.  
The TM248NBK36E operates as sixteen TMS44400DJs and four TMS42260DJs connected as shown in the  
functional block diagram and Table 1. The common I/O feature dictates the use of early write cycles to prevent  
contention on D and Q.  
2
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
BK SINGLE-IN-LINE MEMORY MODULE  
(TOP VIEW)  
TM124MBK36E  
(SIDE VIEW)  
TM248NBK36E  
(SIDE VIEW)  
V
1
2
3
4
SS  
DQ0  
DQ18  
DQ1  
DQ19  
DQ2  
5
6
DQ20  
DQ3  
7
8
DQ21  
9
V
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
CC  
NC  
A0  
A1  
A2  
A3  
A4  
A5  
A6  
NC  
DQ4  
DQ22  
DQ5  
DQ23  
DQ6  
DQ24  
DQ7  
DQ25  
A7  
NC  
V
CC  
A8  
A9  
RAS3  
RAS2  
DQ26  
DQ8  
DQ17  
DQ35  
SS  
CAS0  
CAS2  
CAS3  
CAS1  
RAS0  
RAS1  
NC  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
V
PIN NOMENCLATURE  
A0A9  
Address Inputs  
CAS0CAS3  
Column-Address Strobe  
DQ0DQ35  
NC  
Data In/Data Out  
No Connection  
Presence Detects  
Row-Address Strobe  
5-V Supply  
W
NC  
DQ9  
PD1PD4  
RAS0RAS3  
DQ27  
DQ10  
DQ28  
DQ11  
DQ29  
DQ12  
DQ30  
DQ13  
DQ31  
V
V
CC  
Ground  
SS  
W
Write Enable  
PRESENCE DETECT  
PD1 PD2  
V
CC  
SIGNAL  
(PIN)  
PD3  
(69)  
PD4  
(70)  
DQ32  
DQ14  
DQ33  
DQ15  
DQ34  
DQ16  
NC  
(67) (68)  
80 ns  
70 ns  
60 ns  
80 ns  
70 ns  
60 ns  
V
V
V
V
V
V
NC  
V
SS  
SS  
SS  
SS  
SS  
SS  
SS  
TM124MBK36E  
TM248NBK36E  
V
SS  
NC  
NC  
NC  
NC  
PD1  
PD2  
PD3  
PD4  
NC  
NC  
NC  
NC  
NC  
NC  
V
SS  
NC  
V
SS  
NC  
NC  
NC  
V
SS  
3
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
Table 1. Connection Table  
RASx  
DATA BLOCK  
CASx  
SIDE 1  
SIDE 2  
DQ0DQ7  
DQ8  
RAS0  
RAS0  
RAS1  
RAS1  
CAS0  
CAS0  
DQ9DQ16  
DQ17  
RAS0  
RAS0  
RAS1  
RAS1  
CAS1  
CAS1  
DQ18DQ25  
DQ26  
RAS2  
RAS2  
RAS3  
RAS3  
CAS2  
CAS2  
DQ27DQ34  
DQ35  
RAS2  
RAS2  
RAS3  
RAS3  
CAS3  
CAS3  
Side 2 applies to the TM248NBK36E only.  
single in-line memory module and components  
PC substrate: 1,27 ± 0,1 mm (0.05 inch) nominal thickness; 0.005 inch/inch maximum warpage  
Bypass capacitors: Multilayer ceramic  
Contact area for TM124MBK36E and TM248NBK36E: Nickel plate and gold plate over copper  
Contact area for TM124MBK36T and TM248NBK36T: Nickel plate and tin/lead over copper  
4
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
functional block diagram (TM124MBK36E and TM248NBK36E, side 1)  
10  
A0A9  
RAS0  
W
RAS2  
CAS2  
CAS3  
CAS0  
CAS1  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
10 1M × 4  
A0A9  
RAS  
10  
10  
10  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
10  
10  
W
CAS  
OE  
DQ1–  
DQ4  
4
4
4
4
DQ1–  
DQ4  
DQ18–  
DQ21  
DQ1–  
DQ4  
DQ27–  
DQ30  
DQ0–  
DQ3  
DQ9–  
DQ12  
DQ1–  
DQ4  
10  
10 1M × 4  
A0A9  
RAS  
10 1M × 4  
A0A9  
RAS  
1M × 4  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
A0A9  
RAS  
W
CAS  
OE  
W
CAS  
OE  
DQ1–  
DQ4  
W
CAS  
OE  
DQ1–  
DQ4  
4
4
4
4
DQ22–  
DQ25  
DQ31–  
DQ34  
DQ4–  
DQ7  
DQ13–  
DQ16  
DQ1–  
DQ4  
DQ1–  
DQ4  
1M × 2  
A0A9  
RAS  
W
1M × 2  
A0A9  
RAS  
10  
W
CAS2  
CAS1  
OE  
CAS2  
CAS1  
OE  
DQ1  
DQ2  
DQ1  
DQ2  
DQ26  
DQ35  
DQ8  
DQ17  
functional block diagram (TM248NBK36E, side 2)  
10  
A0A9  
RAS1  
W
RAS3  
CAS2  
CAS3  
CAS0  
CAS1  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
10 1M × 4  
A0A9  
RAS  
10  
10  
10  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
10  
10  
W
CAS  
OE  
DQ1–  
DQ4  
4
4
4
4
DQ1–  
DQ4  
DQ18–  
DQ21  
DQ1–  
DQ4  
DQ27–  
DQ30  
DQ0–  
DQ3  
DQ9–  
DQ12  
DQ1–  
DQ4  
10  
10 1M × 4  
A0A9  
RAS  
10 1M × 4  
A0A9  
RAS  
1M × 4  
1M × 4  
A0A9  
RAS  
W
CAS  
OE  
A0A9  
RAS  
W
CAS  
OE  
W
CAS  
OE  
DQ1–  
DQ4  
W
CAS  
OE  
DQ1–  
DQ4  
4
4
4
4
DQ22–  
DQ25  
DQ31–  
DQ34  
DQ4–  
DQ7  
DQ13–  
DQ16  
DQ1–  
DQ4  
DQ1–  
DQ4  
1M × 2  
A0A9  
RAS  
W
1M × 2  
A0A9  
RAS  
10  
W
CAS2  
CAS1  
OE  
CAS2  
CAS1  
OE  
DQ1  
DQ2  
DQ1  
DQ2  
DQ26  
DQ35  
DQ8  
DQ17  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)  
Supply voltage range, V  
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1 V to 7 V  
CC  
Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 1 V to 7 V  
Short-circuit output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA  
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 W  
Operating free-air temperature range, T  
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C  
A
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and  
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not  
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
NOTE 1: All voltage values are with respect to V  
.
SS  
recommended operating conditions  
MIN NOM  
MAX  
5.5  
6.5  
0.8  
70  
UNIT  
V
V
V
V
Supply voltage  
4.5  
2.4  
– 1  
0
5
CC  
IH  
IL  
High-level input voltage  
V
Low-level input voltage (see Note 2)  
Operating free-air temperature  
V
T
A
°C  
NOTE 2: The algebraic convention, where the more negative (less positive) limit is designated as minimum, is used in this data sheet for logic  
voltage levels only.  
electrical characteristics over recommended ranges of supply voltage and operating free-air  
temperature (unless otherwise noted)  
’124MBK36E-60 ’124MBK36E-70 ’124MBK36E-80  
PARAMETER  
TEST CONDITIONS  
UNIT  
MIN  
MAX  
MIN  
MAX  
MIN  
MAX  
V
V
High-level output voltage  
Low-level output voltage  
I
I
= – 5 mA  
= 4.2 mA  
2.4  
2.4  
2.4  
V
V
OH  
OH  
0.4  
0.4  
0.4  
OL  
OL  
V
= 5.5 V, V = 0 V to 6.5 V,  
I
CC  
All other pins = 0 V to V  
I
I
I
Input current (leakage)  
± 10  
± 10  
± 10  
µA  
I
CC  
V
V
= 5.5 V,  
CC  
= 0 V to V ,  
CC  
Output current (leakage)  
± 10  
1050  
20  
± 10  
900  
20  
± 10  
800  
20  
µA  
O
O
CAS high  
Read- or write-cycle  
current (see Note 3)  
V
V
= 5.5 V, Minimum cycle  
mA  
mA  
CC1  
CC  
= 2.4 V (TTL),  
IH  
After 1 memory cycle,  
RAS and CAS high  
I
Standby current  
CC2  
V
IH  
= V  
– 0.2 V (CMOS),  
CC  
After 1 memory cycle,  
RAS and CAS high  
10  
10  
10  
mA  
V
= 5.5 V, Minimum cycle,  
CC  
Average refresh current  
(RAS-only or CBR)  
(see Note 3)  
RAS cycling,  
CAS high (RAS-only);  
RAS low after CAS low (CBR)  
I
I
1050  
900  
900  
800  
800  
700  
mA  
mA  
CC3  
Average page current  
(see Note 4)  
V
= 5.5 V,  
t
= MIN,  
CC  
RAS low,  
PC  
CAS cycling  
CC4  
NOTES: 3. Measured with a maximum of one address change while RAS = V  
.
IL  
4. Measured with a maximum of one address change while CAS = V  
.
IH  
7
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
electrical characteristics over recommended ranges of supply voltage and operating free-air  
temperature (unless otherwise noted)  
’248NBK36E-60 ’248NBK36E-70 ’248NBK36E-80  
PARAMETER  
TEST CONDITIONS  
UNIT  
MIN  
MAX  
MIN  
MAX  
MIN  
MAX  
High-level output  
voltage  
V
V
I
I
= – 5 mA  
2.4  
2.4  
2.4  
V
V
OH  
OH  
Low-level output  
voltage  
= 4.2 mA  
0.4  
± 20  
± 20  
1070  
0.4  
± 20  
± 20  
920  
0.4  
± 20  
± 20  
820  
OL  
OL  
V
= 5.5 V,  
V = 0 V to 6.5 V,  
I
CC  
All other pins = 0 V to V  
I
I
I
Input current (leakage)  
µA  
µA  
mA  
I
CC  
Output current  
(leakage)  
V
V
= 5.5 V,  
CC  
= 0 V to V , CAS high  
O
O
CC  
Read- or write-cycle  
current (see Note 3)  
V
= 5.5 V,  
Minimum cycle  
CC1  
CC  
V
IH  
= 2.4 V (TTL),  
After 1 memory cycle,  
RAS and CAS high  
40  
20  
40  
20  
40  
20  
mA  
mA  
I
Standby current  
CC2  
V
IH  
= V  
– 0.2 V (CMOS),  
CC  
After 1 memory cycle,  
RAS and CAS high  
V
= 5.5 V,  
Minimum cycle,  
CC  
RAS cycling,  
Average refresh  
current (RAS-only or  
CBR) (see Note 3)  
I
I
2100  
920  
1800  
820  
1600  
720  
mA  
mA  
CC3  
CAS high (RAS-only);  
RAS low after CAS low (CBR)  
Average page current  
(see Note 4)  
V
= 5.5 V,  
t
= MIN,  
CC  
RAS low,  
PC  
CAS cycling  
CC4  
NOTES: 3. Measured with a maximum of one address change while RAS = V  
4. Measured with a maximum of one address change while CAS = V  
IL  
IH  
capacitance over recommended ranges of supply voltage and operating free-air temperature,  
f = 1 MHz (see Note 5)  
’124MBK36E  
’248NBK36E  
PARAMETER  
UNIT  
MIN  
MAX  
50  
35  
21  
70  
7
MIN  
MAX  
100  
35  
C
C
C
C
C
Input capacitance, address inputs  
pF  
pF  
pF  
pF  
pF  
i(A)  
Input capacitance, RAS inputs  
Input capacitance, CAS inputs  
Input capacitance, write-enable input  
Output capacitance on DQ pins  
i(R)  
42  
i(C)  
140  
14  
i(W)  
o(DQ)  
NOTE 5:  
V
CC  
= 5 V ± 0.5 V, and the bias on pins under test is 0 V.  
8
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
switching characteristics over recommended ranges of supply voltage and operating free-air  
temperature  
’124MBK36E-60 ’124MBK36E-70 ’124MBK36E-80  
’248NBK36E-60 ’248NBK36E-70 ’248NBK36E-80  
PARAMETER  
UNIT  
MIN  
MAX  
15  
MIN  
MAX  
18  
MIN  
MAX  
20  
t
t
t
t
t
t
Access time from CAS low  
ns  
ns  
ns  
ns  
ns  
ns  
CAC  
Access time from column address  
Access time from RAS low  
30  
35  
40  
AA  
60  
70  
80  
RAC  
CPA  
CLZ  
OFF  
Access time from column precharge  
CAS to output in low-impedance state  
Output disable time after CAS high (see Note 6)  
35  
40  
45  
0
0
0
0
0
0
15  
18  
20  
NOTE 6:  
t
is specified when the output is no longer driven.  
OFF  
timing requirements over recommended ranges of supply voltage and operating free-air  
temperature  
’124MBK36E-60 ’124MBK36E-70 ’124MBK36E-80  
’248NBK36E-60 ’248NBK36E-70 ’248NBK36E-80  
UNIT  
MIN  
110  
155  
40  
MAX  
MIN  
130  
181  
45  
MAX  
MIN  
150  
205  
50  
MAX  
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Cycle time, random read or write (see Note 7)  
Cycle time, read-write  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
RC  
RWC  
PC  
Cycle time, page-mode read or write (see Note 8)  
Pulse duration, page mode, RAS low  
Pulse duration, nonpage mode, RAS low  
Pulse duration, CAS low  
60 100 000  
70 100 000  
80 100 000  
RASP  
RAS  
CAS  
CP  
60  
15  
10  
40  
15  
0
10 000  
10 000  
70  
18  
10  
50  
15  
0
10 000  
10 000  
80  
20  
10  
60  
15  
0
10 000  
10 000  
Pulse duration, CAS high  
Pulse duration, RAS high (precharge)  
Pulse duration, write  
RP  
WP  
Setup time, column address before CAS low  
Setup time, row address before RAS low  
Setup time, data  
ASC  
ASR  
DS  
0
0
0
0
0
0
Setup time, read before CAS low  
Setup time, W low before CAS high  
Setup time, W low before RAS high  
Setup time, W low before CAS low  
Setup time, W high (see Note 9)  
0
0
0
RCS  
CWL  
RWL  
WCS  
WSR  
15  
15  
0
18  
18  
0
20  
20  
0
10  
10  
10  
NOTES: 7. All cycles assume t = 5 ns.  
T
8. To assure t  
min, t  
should be greater than or equal to 5 ns.  
ASC  
PC  
9. CAS-before-RAS refresh only  
9
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
timing requirements over recommended ranges of supply voltage and operating free-air  
temperature (continued)  
’124MBK36E-60 ’124MBK36E-70 ’124MBK36E-80  
’248NBK36E-60 ’248NBK36E-70 ’248NBK36E-80  
UNIT  
MIN  
10  
50  
10  
50  
5
MAX  
MIN  
15  
55  
15  
55  
5
MAX  
MIN  
15  
60  
15  
60  
5
MAX  
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Hold time, column address after CAS low  
Hold time, data after RAS low (see Note 10)  
Hold time, data  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ms  
ns  
CAH  
DHR  
DH  
Hold time, column address after RAS low (see Note 10)  
Hold time, CAS low to CAS high  
AR  
CLCH  
RAH  
RCH  
RRH  
WCH  
WCR  
WHR  
CHR  
CRP  
CSH  
CSR  
RAD  
RAL  
CAL  
RCD  
RPC  
RSH  
REF  
T
Hold time, row address after RAS low  
Hold time, read after CAS high (see Note 11)  
Hold time, read after RAS high (see Note 11)  
Hold time, write after CAS low  
10  
0
10  
0
10  
0
0
0
0
15  
50  
10  
15  
0
15  
55  
10  
15  
0
15  
60  
10  
20  
0
Hold time, write after RAS low (see Note 10)  
Hold time, W high (see Note 9)  
Delay time, RAS low to CAS high (see Note 9)  
Delay time, CAS high to RAS low  
Delay time, RAS low to CAS high  
60  
10  
15  
30  
30  
20  
0
70  
10  
15  
35  
35  
20  
0
80  
10  
15  
40  
40  
20  
0
Delay time, CAS low to RAS low (see Note 9)  
Delay time, RAS low to column address (see Note 12)  
Delay time, column address to RAS high  
Delay time, column address to CAS high  
Delay time, RAS low to CAS low (see Note 12)  
Delay time, RAS high to CAS low (see Note 9)  
Delay time, CAS low to RAS high  
30  
45  
35  
52  
40  
60  
15  
18  
20  
Refresh time interval  
16  
50  
16  
50  
16  
50  
Transition time  
2
2
2
NOTES: 9. CAS-before-RAS refresh only  
10. The minimum value is measured when t  
is set to t  
RCD  
min as a reference.  
RCD  
11. Either t  
or t  
must be satisfied for a read cycle.  
RRH  
12. The maximum value is specified only to assure access time.  
RCH  
10  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TM124MBK36E, TM124MBK36T 1048576 BY 36-BIT DYNAMIC RAM MODULE  
TM248NBK36E, TM248NBK36T 2097152 BY 36-BIT DYNAMIC RAM MODULE  
SMMS139 – MARCH 1994  
MECHANICAL DATA  
BK–72 LEAD SINGLE IN-LINE MEMORY MODULE  
BK/R–PSIP–N72  
0.054 (1,37)  
0.047 (1,19)  
4.255 (108,08)  
4.245 (107,82)  
0.125 (3,18) TYP  
0.010 (0, 254) MAX  
0.400 (10,16) TYP  
0.128 (3,25)  
1.005 (25,53)  
0.995 (25,27)  
0.120 (3,05)  
0.050 (1,27) TYP  
0.040 (1,02) TYP  
0.208 (5,28) MAX  
0.360 (9,14) MAX  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
device symbolization (TM124MBK36E illustrated)  
TM124MBK36E  
-SS  
YYMMT  
YY = Year Code  
MM = Month Code  
T = Assembly Site Code  
-SS = Speed Code  
NOTE: Location of symbolization may vary.  
11  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
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pertaining to warranty, patent infringement, and limitation of liability.  
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent  
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily  
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CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF  
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In order to minimize risks associated with the customer’s applications, adequate design and operating  
safeguards must be provided by the customer to minimize inherent or procedural hazards.  
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent  
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party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.  
Copyright 1998, Texas Instruments Incorporated  

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