DYNAMIC ELECTRICAL CHARACTERISTICS
(VDD = VGG = 0V, Vss = +4.75 to +15V, -25°C £ TA £ +70°C
unless otherwise specified.)
MAXIMUM RATINGS
PARAMETER
Storage Temperature
Operating Temperature TA
Voltage (any pin to Vss) Vmax
SYMBOL
Tstg
VALUE
UNITS
°C
°C
-65 to +150
-25 to +70
-30 to +0.5
PARAMETER
Count Input Frequency
Vss = 4.75V
Vss = 10V
SYM
MIN
MAX
UNITS
V
Fc
Fc
Fc
DC
DC
DC
250
175
125
kHz
kHz
kHz
DC ELECTRICAL CHARACTERISTICS
(VDD = VGG = 0V, Vss = +4.75 to +15V, -25°C £ TA £ +70°C unless
otherwise specified.)
Vss = 15V
Pulse Width
Vss = 4.75V
Vss = 10V
Vss = 15V
Rise Time
Tcw
Tcw
Tcw
Tcr
2
2.8
4
-
-
-
¥
µs
µs
µs
PARAMETER
SYM MIN
-
MAX UNITS
-
µs
Quescent Supply Current
(All Input Pins Tied to Vss)
(All Output Pins Left Open)
Vss = 4.75V
Vss = 15V
Input Capacitance All Inputs
Hysteresis On Count Input
Noise Immunity All Other Inputs VNL
VNH
Output Levels All Outputs
(All Output Pins Left Open)
-
-
-
Fall Time
Tcf
-
¥
µs
Scan Input Frequency
Divide Control
Set-Up Time
Hold Time
Fsc
DC
100
kHz
IDD
IDD
Cin
-
-
-
20
25
10
-
-
-
mA
mA
pF
V
V
V
Tds
Tdh
2
8
-
-
µs
µs
Reset Pulse Width**
Reset
Trpw
2
-
µs
30%(Vss - VDD)
30%(Vss - VDD)
30%(Vss - VDD)
-
Set Up Time
Hold Time
Trs
Trh
0
6
-
-
µs
µs
VOL
VOH
0.5
-
V
V
Inhibit Internal Reset
Set Up Time
Vss - 1
Tis
0
3
2
-
-
-
µs
µs
µs
Hold Time*
Preset Pulse Width**
Preset Enable
Tirh
Tppw
7 Segment Output Current
Source Current
Vss = 4.75V, VOUT = 0.7V, 70°C ISEG
Vss = 4.75V, VOUT = 0.7V, 25°C ISEG
Vss = 10V, VOUT = 7V, 25°C
Vss = 15V, VOUT = 13V, 70°C
Note: Limit Segment Source Current to 4.5mA max.
0.3
0.4
2.0
3.0
-
-
-
-
mA
mA
mA
mA
Set Up Time
Tips
Tiph
Tdtw
0
6
2
-
-
-
µs
µs
µs
ISEG
ISEG
Hold Time*
Data Transfer Pulse Width**
Data Transfer
Set Up Time
Hold Time
Tdts
Tdth
0
6
-
-
µs
µs
Sink Current (VOUT = 0.4V)
Vss = 4.75V, 25°C
Vss = 10V, 25°C
Vss = 15V, 25°C
Vss = 15V, 70°C
ISEG
ISEG
ISEG
ISEG
-21
-17
-15
-10
-
-
-
-
µA
µA
µA
µA
Up/Down
Set Up Time
Hold Time
Tuds
Tud
0
10
-
-
µs
µs
Count Inhibit
Set Up Time
Hold Time
Tcs
Tch
2
10
-
-
µs
µs
BCD, Zero Detect, Mainsignal and Presignal Output Current
Source Current
Vss = 4.75V, VOUT = 4.5V, 70°C IoH
Vss = 4.75V, VOUT = 4.5V, 25°C IoH
Vss = 10V, VOUT = 9.0V, 25°C
Vss = 15V, VOUT = 13V, 25°C
Note: Limit Segment Source Current to 4.5mA max.
Data Outputs (CL = 10pF)
Rise Time
0.10
0.13
0.7
-
-
-
-
mA
mA
mA
mA
Tdr
-
1.0
µs
Fall Time
IoH
IoH
Vss = 4.75V
Vss = 10V
Vss = 15V
Tdf
Tdf
Tdf
-
-
-
2.0
3.0
4.0
µs
µs
µs
2.5
Sink Current (VOUT = 0.4V)
Digit Select Outputs Guard Band Time
within 7 segment & BCD outputs Tgb
See Figure 3
Vss = 4.75V, 25°C
Vss = 10V, 25°C
Vss = 15V, 25°C
Vss = 15V, 70°C
IoL
IoL
IoL
IoL
-7.5
-6.0
-5.5
-4.0
-
-
-
-
µA
µA
µA
µA
0.5
-
µs
µs
Main Signal, Presignal, Zero Detect
Outputs delay with respect to positive
Digit Select Output Current
Source Current
edge of Count Input
Tdo
-
3
Vss = 4.75V, VOUT = 4.5V, 70°C IoH
Vss = 4.75V, VOUT = 4.5V, 25°C IoH
0.28
0.35
2.0
-
-
-
-
mA
mA
mA
mA
Set-Up and Hold times are defined with respect to positive edge of count
input except where indicated by asterisks.
Vss = 10V, VOUT = 9V, 25°C
IoH
* Indicates a hold time which must last for at least one whole count cycle
plus 5µs past the next positive edge of count input.
Vss = 15V, VOUT = 13.5V, 70°C IoH
Note: Limit digit select current to 10mA.
7.0
** Reset, Preset and Data Transfer Pulse Width is as specified except if
applied when a count input is going positive. In that case the set-up and
hold times govern.
Sink Current (VOUT = 0.4V)
Vss = 4.75V, 25°C
Vss = 10V, 25°C
Vss = 15V, 25°C
Vss = 15V, 70°C
IoL
IoL
IoL
IoL
-15
-12
-11
-
-
-
-
µA
µA
µA
µA
The information included herein is believed to be
accurate and reliable. However, LSI Computer Systems,
Inc. assumes no responsibilities for inaccuracies, nor for
any infringements of patent rights of others which may
result from its use.
7055-012703-3
LSI [ LSI COMPUTER SYSTEMS ]
