HT6256 Honeywell Microelectronics & Precision Sensors, HT6256 Datasheet - Page 3

• Manufacturer Part Number: HT6256
• Description: IC SRAM 256KBIT 20MHZ 28DIP
• Manufacturer: Honeywell Microelectronics & Precision Sensors
• Series: HTMOS™r

Specifications of HT6256

• Format - Memory: RAM
• Memory Type: SRAM
• Memory Size: 256K (32K x 8)
• Speed: 20MHz
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 225°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

(1) Stresses in excess of those listed above may result in permanent damage. These are stress ratings only, and operation at these levels is not
(2) Voltage referenced to VSS.
(3) RAM power dissipation (IDDSB + IDDOP) plus RAM output driver power dissipation due to external loading must not exceed this specification.
(4) Class 2 electrostatic discharge (ESD) input protection. Tested per MIL-STD-883, Method 3015 by DESC certified lab.
RECOMMENDED OPERATING CONDITIONS
CAPACITANCE (1)
DATA RETENTION CHARACTERISTICS (1)
(1) This parameter is tested during initial design characterization only
(2) Typical operating conditions: TA= 25 C.
(1) Operating conditions: TA= -55 C to +125 C.
ABSOLUTE MAXIMUM RATINGS (1)
VDD
VPIN
TSTORE
TSOLDER
PD
IOUT
VPROT
Symbol
implied. Frequent or extended exposure to absolute maximum conditions may affect device reliability.
Symbol
Symbol
CI
CO
JC
Symbol
VDD
TA
VPIN
VDR
IDR
Input Capacitance
Output Capacitance
Data Retention Voltage
Data Retention Current
Thermal Resistance (Jct-to-Case)
Supply Voltage Range (2)
Voltage on Any Pin (2)
Storage Temperature (Zero Bias)
Soldering Temperature (5 Seconds)
Maximum Power Dissipation (3)
DC or Average Output Current
ESD Input Protection Voltage (4)
Supply Voltage (referenced to VSS)
Ambient Temperature
Voltage on Any Pin (referenced to VSS)
Parameter
Parameter
Parameter
Parameter
Typical
Typical
(2)
7
28 DIP
5
3
Worst Case
Min
Min
Worst Case
2.5
Max
Max
500
330
7
9
-0.3
Min
-55
4.5
2000
-0.5
-0.5
-65
Min
Units
Units
pF
pF
Description
V
A
A
Rating
Typ
5.0
25
VI=VDD or VSS, f=1 MHz
VIO=VDD or VSS, f=1 MHz
NCS=VDD=2.5V, VI=VDD or VSS
NCS=VDD=3.0V, VI=VDD or VSS
NCS=VDR
VI=VDR or VSS
VDD+0.5
Test Conditions
Max
325
355
VDD+0.3
6.5
25
10
Test Conditions
2
Max
225
5.5
HT6256
Units
Units
mA
C/W
W
V
V
V
C
C
V
V
C