UR5HC418 Datasheet, PDF (13/14 Pages) Semtech Corporation – AT / PS/2 - Compatible Keyboard Encoder

ELECTRICAL SPECIFICATIONS
Absolute Maximum Ratings
Ratings
Supply Voltage
Input Voltage
Current Drain per Pin
(not including Vss or Vdd)
Operating Temperature
UR5HC418-XX
Storage Temperature Range
Symbol
Vdd
Vin
I
TA
Tstg
Value
-0.3 to +7.0
Vss -0.3 to Vdd +0.3
25
T low to T high
-40 to +85
-65 to +150
Unit
V
V
mA
°C
°C
Thermal Characteristics
Characteristic
Thermal Resistance
Plastic DIP
Cerdip
PLCC
Symbol
Tja
Value
60
-60
70
Unit
°C per W
DC Electrical Characteristics (Vdd=5.0 Vdc +/-10%, Vss=0 Vdc, Temperature range=T low to T high unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (I load<10µA)
Vol
0.1
V
Voh
Vdd–0.1
Output High Voltage (I load=0.8mA)
Voh
Vdd–0.8
V
Output Low Voltage (I load=1.6mA)
Vol
0.4
V
Input High Voltage
Vih
0.7xVdd
Vdd
V
Input Low Voltage
Vil
Vss
0.2xVdd
V
User Mode Current
Ipp
5
10
mA
Data Retention Mode
Vrm
2.0
V
Supply Current (Run)
Idd
4.7
7.0
mA
I/O Ports Hi-Z Leakage Current
Iil
+/-10
µA
Input Current
Iin
+/- 1
µA
I/O Port Capacitance
Cio
8
12
pF
Control Timing (Vdd=5.0 Vdc +/-10%, Vss=0 Vdc, Temperature range=T low to T high unless otherwise noted)
Characteristic
Symbol
Min
Max
Frequency of Operation
fosc
Crystal Option
4.0
External Clock Option
dc
4.0
Crystal Oscillator Startup Time
fop
Crystal (fosc/2)
2.0
External Clock Option
dc
2.0
Cycle Time
tcyc
500
Crystal Oscillator Startup Time
toxov
100
Stop Recovery Startup Time
tiLCH
100
Reset Pulse Width
tRL
8
Interrupt Pulse Width Low
tLIH
125
Interrupt Pulse Period
tiLIL
*
OSC1Pulse Width
tOH, TOL
90
Unit
MHz
MHz
ns
ms
ms
tcyc
ns
tcyc
ns
Copyright ©1997-2001 Semtech Corporation
13
DOC5-418-DS-109
www.semtech.com