74gtl1655a STMicroelectronics, 74gtl1655a Datasheet
74gtl1655a
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74gtl1655a Summary of contents
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... SWITCHING NOISE IN PARALLEL COMUNICATIONS PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 1655 DESCRIPTION The 74GTL1655A devices are 16-bit high-drive (100mA), low-output-impedance universal bus transceivers designed for backplane applications. The 74GTL1655A devices provide live-insertion capability for backplane applications by tolerating active signals on the data ports when the devices are powered off ...
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... OEBA), latch-enable (LEAB and LEBA), and clock (CLK) inputs. For A-to-B data flow, the devices operate in the transparent mode when LEAB is high. When LEAB is low, the A data is latched if CLK is held at a high or low logic level. If LEAB is low, the A data is stored in the latch/flip-flop on the low-to-high transition of CLK ...
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... OEBA Truth Table ERC ERC NOMINAL VOLTAGE V CC GND 74GTL1655A OUTPUT MODE B Z Isolation L Transparent H Transparent L Registered H Registered (2) Previous State B0 (3) Previous State B0 OUTPUTS A PORT B PORT Active Active Z Active Active Z Z ...
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... Figure 3: Logic Diagram 4/16 ...
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... V can be adjusted to optimize noise margin (typ two-thirds V REF Parameter ERC REF Parameter GTL GTL+ GTL GTL+ B port other B port other B port other A port A port B port ) TT 74GTL1655A Value -0.5 to +4.6 -0.5 to +4.6 -0.5 to +4.6 -0.5 to +4.6 -0 200 -65 to +150 300 Value Min. Typ. Max. 3.0 3.3 3.6 1.14 1.2 1.26 1.35 1 ...
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... Table 8: DC Specifications Symbol Parameter V High Level Input Voltage IK V High Level Output OHA Voltage A Port V Low Level Output OLA Voltage A Port V Low Level Output OLB Voltage B Port I Input Current Control I B Port I Power Off Leakage off Current I Bus Hold A Port Input ...
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... R =12.5 C =30pF ERC =GND R =12.5 C =30pF ERC =GND R =12.5 C =30pF ERC =500 C =50pF =500 C =50pF =500 C =50pF L L 74GTL1655A Value - °C Min. Typ. Max 1.2 -1 100 100 Value - °C Min. Typ. Max. 160 1.5 5.2 1.5 6.2 1.5 5.5 1.5 5.8 1.5 5.8 1.5 6.4 1.5 5.4 1.5 6.2 1.5 4.3 1.5 4.6 1.5 4.3 1 ...
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... ERC =GND R =12.5 C =30pF ERC =GND R =12.5 C =30pF ERC =GND R =12.5 C =30pF ERC =GND R =12.5 C =30pF ERC L L 74GTL1655A Value - °C Min. Typ. Max. 1 4.6 1 6.1 2.7 2.8 2.6 0.4 0 Value - °C Min. Typ. Max. 160 1.5 5.1 1.5 6.5 1.5 5.4 1.5 6.2 1.5 5 ...
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... Symbol Parameter t Propagation Delay Time PLH PHL t Propagation Delay Time PLH PHL t Propagation Delay Time PLH LEBA PHL t Enable Delay Time EN OEBA Disable Delay Time DIS OEBA Slew rate Slew rate B output both transition (0 ...
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... Table 12: Test Circuit For "B" Outputs C = 30pF or equivalent (includes jig and probe capacitance 12.5 or equivalent pulse generator (typically OUT t =t <=2.5ns r f Figure 5: Waveform - Pulse Duration (A Port, Control Pin) Figure 6: Waveform - Clock To B Port Propagation Delay Time ...
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... Figure 7: Waveform - Clock To A Port Propagation Delay Time Figure 8: Waveform - Setup And Hold Time 74GTL1655A 11/16 ...
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... Figure 9: Waveform - Enable And Disable Time (A Port) 12/16 ...
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... D 16 6.0 e 0.5 BSC K 0˚ PIN 1 IDENTIFICATION 1 mm. TYP MAX. MIN. 1.1 0.15 0.002 0.9 0.27 0.0067 0.20 0.0035 17.1 0.665 8.1 6.2 0.236 8˚ 0.75 0.020 74GTL1655A inch TYP. MAX. 0.043 0.006 0.035 0.011 0.0079 0.673 0.318 0.244 0.0197 BSC 0˚ 0.030 7187824A 8˚ 13/16 ...
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... Tape & Reel TSSOP64 MECHANICAL DATA DIM. MIN 12 8.7 Bo 17.2 Ko 1.4 Po 3.9 P 11.9 14/16 mm. TYP MAX. MIN. 330 13.2 0.504 0.795 2.362 30.4 8.9 0.342 17.4 0.677 1.6 0.055 4.1 0.153 12.1 0.468 inch TYP. MAX. 12.992 0.519 1.197 0.350 0.685 0.063 0.161 0.476 ...
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... Table 13: Revision History Date Revision 18-Oct-2004 1 Description of Changes First Release. 74GTL1655A 15/16 ...
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... Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...