DS8838N 반도체 회로 부품 판매점
Quad Unified Bus Transceiver
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 National Semiconductor |
May 1999
DS8838
Quad Unified Bus Transceiver
General Description
The DS8838 is a quad high speed driver/receiver designed
for use in bus organized data transmission systems intercon-
nected by terminated 120Ω impedance lines. The external
termination is intended to be 180Ω resistor from the bus to
the +5V logic supply together with a 390Ω resistor from the
bus to ground. The bus can be terminated at one or both
ends. Low bus pin current allows up to 27 driver/receiver
pairs to utilize a common bus. The bus loading is unchanged
when VCC = 0V. The receivers incorporate hysteresis to
greatly enhance bus noise immunity. One two-input NOR
gate is included to disable all drivers in a package simulta-
neously. Receiver performance is optimized for systems with
bus rise and fall times ≤ 1.0 µs/V.
Features
n 4 totally separate driver/receiver pairs per package
n 1V typical receiver input hysteresis
n Receiver hysteresis independent of receiver output load
n Guaranteed minimum bus noise immunity of 1.3V, 2V
typ.
n Temperature-insensitive receiver thresholds track bus
logic levels
n 20 µA typical bus terminal current with normal VCC or
with VCC = 0V
n Open collector driver output allows wire-OR connection
n High speed
n Series 74 TTL compatible driver and disable inputs and
receiver outputs
Typical Application
DS005812-1
© 1999 National Semiconductor Corporation DS005812
www.national.com
Connection Diagram
Dual-In-Line Package
DS005812-2
Top View
Order Number DS7838J, DS8838M or DS8838N
See NS Package Number J16A, M16A or N16A
www.national.com
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DS8838N transceiver
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국내 전력반도체 판매점
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전화번호 : 051-319-2877
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관련 데이터시트
DS8838
Quad Unified Bus Transceiver - National Semiconductor
DS8838
DS8838 Quad Unified Bus Transceiver (Rev. A) - Texas Instruments
DS8838M
Quad Unified Bus Transceiver - National Semiconductor
DS8838N
Quad Unified Bus Transceiver - National Semiconductor