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SN28837 Datasheet(PDF) 6 Page - Texas Instruments

Part No. SN28837
Description  1/2-INCH PAL TIMER
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN28837
1/2-INCH PAL TIMER
SOCS031B – JULY 1991
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VDD (see Note 1)
– 0.3 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI
– 0.3 V to VDD + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO
– 0.3 V to VDD + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation at (or below) TA = 25°C
300 mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA
–20
°C to 45°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, TSTG
–55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 in) from case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to GND.
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VDD
4.5
5
5.5
V
High-level input voltage, VIH
VDD x 0.7
V
Low-level input voltage, VIL
0.8
V
Operating frequency
13.375
MHz
Power-up time
300
µs
Operating free-air temperature, TA
–20
45
°C
electrical characteristics over recommended operating ranges of supply voltage and free-air
temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
GT3/SH2 and GT1/SH3
VDD = 4.5 V,
IOH = – 4 mA
3.5
V
VOH
All other outputs
VDD = 4.5 V,
IOH = – 2 mA
3.5
V
VOL
GT3/SH2 and GT1/SH3
VDD = 4.5 V,
IOL = 4 mA
0.5
V
VOL
All other outputs
VDD = 4.5 V,
IOL = 2 mA
0.5
V
IIH§
VIH = 5 V
1
µA
IIL
VIL = 0
–30
– 200
– 500
µA
IDD(AV)
Average supply current
10
30
mA
IDD(S)
Standby supply current
1
mA
‡ The HCR, SB, and VCR inputs are Schmitt-trigger inputs with 0.1-V to 1-V hysteresis.
§ All inputs except X1 have pullup-current sources.
switching characteristics over recommended operating free-air temperature range, VDD = 5 V
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fclock
Frequency
S1, S2, S3, SH1, GT2, GT1/SH3, GT3/SH2
CL =50 pF
4.458333
MHz
tw
Pulse duration
S1, S2, S3, SH1, GT2, GT1/SH3, GT3/SH2
CL = 50 pF
75
ns
t
Rise time
GT1/SH3 and GT3/SH2
10
ns
tr
Rise time
All other outputs
CL =50 pF
50
ns
tf
Fall time
GT1/SH3 and GT3/SH2
CL = 50 pF
10
ns
tf
Fall time
All other outputs
50
ns




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