82B96 Просмотр технического описания (PDF) - Philips Electronics
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Компоненты Описание
производитель
82B96 Datasheet PDF : 16 Pages
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Philips Semiconductors
Dual bi-directional bus buffer
Product data
P82B96
SYMBOL
PARAMETER
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Input logic switching threshold voltages
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VSx, VSy
Input logic voltage LOW (Note 3)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VSx, VSy
Input logic level HIGH threshold (Note 3)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ dVSx/dT,
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ dVSy/dT
Temperature coefficient of input thresholds
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VRx, VRy
Input logic HIGH level
VRx, VRy
Input threshold
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VRx, VRy
Input logic LOW level
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Logic level threshold difference
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VSx, VSy
Input/Output logic level difference (Note 1)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ NOTES:
CONDITIONS
On normal I2C-bus
On normal I2C-bus
Fraction of applied VCC
Fraction of applied VCC
Fraction of applied VCC
VSX output LOW at 0.2 mA –
VSX input HIGH max
MIN. TYP. MAX. UNIT
—
640
600
mV
700
650
—
mV
—
–2
—
mV/K
0.58
—
—
V
—
0.5
—
V
—
—
0.42
V
50
85
—
mV
1. The minimum value requirement for pull-up current, 200 µA, guarantees that the minimum value for VSX output LOW will always exceed the
minimum VSX input HIGH level to eliminate any possibility of latching. The specified difference is guaranteed by design within any IC. While
the tolerances on absolute levels allow a small probability the LOW from one SX output is recognized by an SX input of another P82B96 this
has no consequences for normal applications. In any design the SX pins of different ICs should never be linked because the resulting system
would be very susceptible to induced noise and would not support all I2C operating modes.
2. The output logic LOW depends on the sink current. For scaling, see Application Note AN255.
3. The input logic threshold is independent of the supply voltage.
CHARACTERISTICS
At Tamb = 25 °C; Voltages are specified with respect to GND with VCC = 5 V unless otherwise stated.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ SYMBOL
PARAMETER
CONDITIONS
MIN.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Bus Release on VCC Failure
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VSx, VSy,
VCC voltage at which all buses are
—
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VTx, VTy
guaranteed to be released
dV/dT
Temperature coefficient of guaranteed release
—
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ voltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Buffer response time
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Tfall delay
Buffer time delay on FALLING input between RTx pull-up = 160 Ω,
—
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VSx to VTx
VSx = input switching threshold,
no capacitive load, VCC = 5 V
VSy to VTy
and VTx output falling 50%.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Trise delay
Buffer time delay on RISING input between RTx pull-up = 160 Ω,
—
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VSx to VTx
VSx = input switching threshold,
no capacitive load, VCC = 5 V
VSy to VTy
and VTx output reaching 50% VCC
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Tfall delay
Buffer time delay on FALLING input between RSx pull-up = 1500 Ω, no
—
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VRx to VSx
VRx = input switching threshold,
capacitive load, VCC = 5 V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VRy to VSy
and VSx output falling 50%.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Trise delay
Buffer time delay on RISING input between RSx pull-up = 1500 Ω,
—
VRx to VSx
VRx = input switching threshold,
no capacitive load, VCC = 5 V
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ VRy to VSy
and VSx output reaching 50% VCC
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Input capacitance
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Cin
Effective input capacitance of any signal pin
—
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ measured by incremental bus rise times
TYP.
MAX. UNIT
—
1
V
–4
—
mV/K
70
—
ns
90
—
ns
250
—
ns
270
—
ns
—
7
pF
NOTES ON RESPONSE TIME
The fall-time of VTX from 5 V to 2.5 V in the test is approximately 15 ns.
The fall-time of VSX from 5 V to 2.5 V in the test is approximately 50 ns.
The rise-time of VTX from 0 V to 2.5 V in the test is approximately 20 ns.
The rise-time of VSX from 0.9 V to 2.5 V in the test is approximately 70 ns.
2004 Mar 26
5
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