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PDF HM6208H Data sheet ( Hoja de datos )
| Número de pieza | HM6208H | |
| Descripción | High Speed CMOS Static RAM | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HM6208H Series
65,536-word × 4-bit High Speed CMOS Static RAM
Features
• Single 5 V supply and high density 24-pin package
• High speed: Access time 25/35/45 ns (max)
• Low power
Operation: 300 mW (typ)
Standby: 100 µW (typ)
30 µW (typ) (L-version)
• Completely static memory required
No clock or timing strobe required
• Equal access and cycle time
• Directly TTL compatible: All inputs and outputs
• Battery backup operation capability (L-version)
Ordering Information
Type No.
HM6208HP-25
HM6208HP-35
HM6208HP-45
HM6208HLP-25
HM6208HLP-35
HM6208HLP-45
HM6208HJP-25
HM6208HJP-35
HM6208HJP-45
HM6208HLJP-25
HM6208HLJP-35
HM6208HLJP-45
Access Time
25 ns
35 ns
45 ns
25 ns
35 ns
45 ns
25 ns
35 ns
45 ns
25 ns
35 ns
45 ns
Package
300-mil, 24-pin plastic DIP (DP-24NC)
300-mil, 24-pin SOJ (CP-24D)
1 page  
HM6208H Series
AC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, unless otherwise noted)
Test Conditions
• Input pulse levels: VSS to 3.0 V
• Input rise and fall time: 5 ns
• Input and output timing reference levels: 1.5 V
• Output load: See figure
Output Load
Dout
255 Ω
+5V
480 Ω
30 pF *1
Dout
255 Ω
+5V
480 Ω
5 pF *1
Output load (A)
Output load (B)
(tHZ, tLZ, tWZ, and tOW)
Note: 1. Including scope and jig
Read Cycle
HM6208H-25 HM6208H-35 HM6208H-45
Parameter
Symbol Min Max Min Max Min Max Unit
Read cycle time
tRC 25 — 35 — 45 — ns
Address access time
tAA — 25 — 35 — 45 ns
Chip select access time
tACS — 25 — 35 — 45 ns
Output hold from address change
t OH
5
—5
—5
— ns
Chip selection to output in low-Z
t *1
LZ
5
—5
—5
— ns
Chip deselection to output in high-Z
t *1
HZ
0
15 0
20 0
20 ns
Chip selection to power up time
tPU 0 — 0 — 0 — ns
Chip deselection to power down time tPD
— 15 — 25 — 30 ns
Note: 1. Transition is measured ±200 mV from steady state voltage with load (B). These parameters are
sampled and not 100% tested.
5
5 Page 
Package Dimensions
HM6208HP/HLP Series (DP-24NC)
29.88
24 30.48 Max
13
1
1.14
1.27 Max
1.30
12
HM6208H Series
Unit: mm
7.62
2.54 ± 0.25
0.48 ± 0.10
HM6208HJP/HLJP Series (CP-24D)
15.63
16.00 Max
24 13
0.25
+
–
0.11
0.05
0° – 15°
Unit: mm
1
0.74
12
1.30 Max
0.43 ± 0.10
1.27
0.10
6.76
+
–
0.35
0.16
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet HM6208H.PDF ] | |
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