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BPNPA16E-TR Datasheet(PDF) 3 Page - Agere Systems |
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BPNPA16E-TR Datasheet(HTML) 3 Page - Agere Systems |
3 / 16 page Lucent Technologies Inc. 3 Data Sheet January 1999 BDG1A, BDP1A, BDGLA, BPNGA, BPNPA, and BPPGA Quad Differential Drivers Electrical Characteristics For electrical characteristics over the entire temperature range, see Figures 7 through 9. Table 2. Power Supply Current Characteristics TA = –40 °C to +125 °C, VCC = 5 V ± 0.5 V. * Measured with no load (BPPGA has no load on drivers C and D). † The additional power dissipation is the result of integrating the termination resistors into the device. ICC is measured with a 100 Ω resistor across the driver outputs (BPPGA has terminating resistors on drivers A and B). Third State These drivers produce pseudo-ECL levels, and the third-state mode is different than the conventional TTL devices. When a driver is placed in the third state, the bases of the output transistors are pulled low, bringing the outputs below the active-low levels. This voltage is typically 2 V for most drivers. In the bidirectional bus application, the driver of one device, which is in its third state, may be back driven by another driver on the bus whose voltage in the low state is lower than the third-stated device. This could come about due to differences in the drivers’ independent power supplies. In this case, the device in the third state will control the line, thus clamping the line and reducing the signal swing. If the difference voltage between the independent power supplies and the drivers is small, then this consideration can be ignored. In the typical case, the difference voltage can be as much as 1 V without signifi- cantly affecting the amplitude of the driving signal. Parameter Symbol Min Typ Max Unit Power Supply Current (VCC = 5.5 V): All Outputs Disabled: BDG1A*, BPNGA* ICC 45 65 mA BDP1A†, BPNPA† ICC 120 160 mA BDGLA* ICC 35 55 mA BPPGA*† ICC 85 115 mA All Outputs Enabled: BDG1A*, BPNGA* ICC 25 40 mA BDP1A†, BPNPA† ICC 150 200 mA BDGLA* ICC 14 20 mA BPPGA*† ICC 90 115 mA |
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