Features: Organization
TM497FBK32R/G: 4 194 304 x 32
TM893GBK32R/G: 8 388 608 x 32
Single 5-V Power Supply (±10% Tolerance)
72-Pin Single In-Line Memory Module (SIMM) for Use With Socket
TM497FBK32R/G Uses Eight 16M-Bit Dynamic Random-Access Memories (DRAMs) in Plastic Small-Outline J-Lead (SOJ) Packages
TM893GBK32R/G Uses Sixteen 16M-Bit DRAMs in Plastic SOJ Packages
Long Refresh Period . . . 16 ms (1024 Cycles)
All Inputs, Outputs, Clocks Fully TTL-Compatible
3-State Output
Common CAS Control for Nine Common Data-In and Data-Out Lines in Four Blocks
Enhanced Page-Mode Operation With CAS-Before-RAS (CBR), RAS-Only, and Hidden Refresh
Presence Detect
Performance Ranges:
ACCESS ACCESS ACCESS READ
TIME TIME TIME OR
tRAC tAA tCAC WRITE
CYCLE
(MAX) (MAX) (MAX) (MIN)
'497FBK32R/G-50 60 ns 30 ns 15 ns 110 ns
'497FBK32R/G-60 70 ns 35 ns 18 ns 130 ns
'497FBK32R/G-70 80 ns 40 ns 20 ns 150 ns
'497FBK32R/G-50 60 ns 30 ns 15 ns 110 ns
'497FBK32R/G-60 70 ns 35 ns 18 ns 130 ns
'497FBK32R/G-70 80 ns 40 ns 20 ns 150 ns
Low Power Dissipation
Operating Free-Air Temperature Range 0°C to 70°C
Gold-Tabbed Version Available:† TM497FBK32G, TM893GBK32G
Tin-Lead (Solder-) Tabbed Version Available: TM497FBK32R, TM893GBK32R
Pinout
SpecificationsSupply voltage range, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V to 7 V
Voltage range on any pin (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V to 7 V
Short-circuit output current . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 mA
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 W
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . .0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55°C to 125°CDescriptionThe TM893GBK32G, designed as 4 × 4 194304 × 8-bits, is a 16M-byte, 72-pin, leadless, single-in-line memory module (SIMM). The SIMM is composed of eight (8) TMS417409DJs, 4194304 × 4-bit DRAMs, each in 24/26-lead, plastic, small-outline J-lead (SOJ) packages mounted on a substrate with decoupling capacitors. See the TMS417409A data sheet (literature number SMKS893) for timing diagrams.
The TM893GBK32G SIMM is available in the single-sided BK leadless module for use with sockets. The TM497FBK32R/G features RAS access times of 50, 60, and 70 ns. This device is designed for operation from 0°C to 70°C.
The TM893GBK32G, designed as 4 × 8 388608 × 8-bits, is a 32M-byte, 72-pin, leadless SIMM. The SIMM is composed of sixteen TMS417409DJs, 4194304 × 4-bit DRAMs, each in 24/26-lead, plastic, small-outline J-lead (SOJ) packages mounted on a substrate with decoupling capacitors. See the TMS417409A data sheet (literature number SMKS893) for timing diagrams.
The TM893GBK32G SIMM is available in the double-sided BK leadless module for use with sockets. The TM893GBK32R/G features RAS access times of 50, 60, and 70 ns. This device is characterized for operation from 0°C to 70°C.
TM893GBK32G Data Sheet
