NSAM265SR Datasheet, PDF (35/58 Pages) National Semiconductor (TI) – CompactSPEECH Digital Speech Processors

Appendix A Device Specifications (Continued)
A 2 ABSOLUTE MAXIMUM RATINGS
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Storage Temperature
b65 C to a150 C
Temperature Under Bias
0 C to a70 C
All Input or Output Voltages
with Respect to GND
b0 5V to a6 5V
Note Absolute maximum ratings indicate limits beyond which permanent
damage may occur Continuous operation at these limits is not intended
operation should be limited to those conditions specified below
A 3 ELECTRICAL CHARACTERISTICS T_A e 0 C to a70 C V_CC e 5V g10% GND e 0V
Symbol
Parameter
Conditions
Min
Typ Max
V_IH
TTL Input
Logical 1 Input Voltage
20
V_CC a
05
V_IL
V_XH
V_XL
V_ENVh
V_Hh
TTL Input Logical 0 Input Voltage
CLKIN Input High Voltage
CLKIN Input Low Voltage
ENV0 High Level Input Voltage
CMOS Input with Hysteresis
Logical 1 Input Voltage
External Clock
External Clock
b0 5
08
20
08
36
36
V_HI
CMOS Input with Hysteresis
Logical 0 Input Voltage
11
V_hys
V_OH
V_OHWC
V_OL
V_OLWC
I_L
I_O (Off)
Hysteresis Loop Width (Note A)
Logical 1 TT Output Voltage
RAS CAS DWE and EMCS
Logical 1 Output Voltage
Logical 0 TTL Output Voltage
RAS CAS DWE and EMCS
Logical 0 Output Voltage
Input Load Current (Note C)
Output Leakage Current
(I O Pins in Input Mode) (Note C)
I_OH e b0 4 mA
I_OH e b0 4 mA
I_OH e b50 mA (Note B)
I_OL e 4 mA
I_OL e 50 mA (Note B)
I_OL e 4 0 mA
I_OL e 50 mA (Note B)
0V ^s V_IN ^s V_CC
0V ^s V_OUT ^s V_CC
05
24
24
V_CC b 0 2
b5 0
b5 0
0 45
02
0 45
02
50
50
I_CC1
Active Supply Current
Normal Operation Mode
Running Speech Applications (Note D)
65
80
I_CC2
Standby Supply Current
Normal Operation Mode
DSPM Idle (Note D)
40
I_CC3
Power-Down Mode
Supply Current
Power-Down Mode
(Notes D and E)
15
C_X
X1 and X2 Capacitance (Note A)
17
Note A Guaranteed by design
Note B Measured in power-down mode The total current driven or sourced by all the CompactSPEECH’s output signals is less than 50 mA
Note C Maximum 20 mA for all pins together
Note D I_OUT e 0 T_A e 25 C V_CC e 5V operating from a 40 96 MHz crystal and running from internal memory with Expansion Memory disabled
Note E All input signals are tied to 1 or 0 (above V_CC b 0 5 or below V_SS a0 5V)
Units
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
mA
pF
35