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BH7634AS Datasheet

  • BH7634AS

  • Audio / video switch for CANAL - Plus decoder

  • 157.11KB

  • 12頁(yè)

  • ROHM

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Multimedia ICs
Audio / video switch for CANAL - Plus
decoder
BH7634AS
The BH7634AS is one-chip IC that contains audio and video switches that support 21-pin SECAM and PAL connec-
tors.
The I
2
C BUS for switch control simplifies applications, while the two expansion ports allow up to two external inputs.
鈥?/div>
Applications
VCRs
鈥?/div>
Features control.
1) I C BUS
2
2) Video input is sync tip clamped, and includes a
small-capacity (0.022碌F) input capacitor.
3) Three FSCOUT values.
4) Two expansion ports.
5) Audio mute function.
6) 75鈩?driver output (pins 20 and 23) requires no
attached capacitor.
鈥?/div>
Absolute maximum ratings (Ta = 25擄C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
Pd
Topr
Tstg
Limits
13.5
1200
鈥?25 ~ + 60
鈥?55 ~ + 125
Unit
V
mW
擄C
擄C
鈭?/div>
Reduce by 12mW for each increase in Ta of 1擄C over 25擄C.
鈥?/div>
Recommended operating conditions (Ta = 25擄C)
Parameter
Operating power supply voltage
Symbol
V
CC
Min.
8.5
Typ.
12
Max.
13
Unit
V
1

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