Integrated circuit devices having strobe signal transmitters with enhanced drive characteristics
An integrated circuit device includes a read strobe signal transmitter including a main output drive circuit and a victim output drive circuit having an output terminal electrically coupled to an output terminal of the main output drive circuit. The read strobe signal transmitter is configured to: (i) generate a periodic active read strobe signal during a read time interval, in response to a pair of periodic drive signals, which are 180° out-of-phase relative to each other during the read time interval, and (ii) generate a disabled read strobe signal at a fixed logic level during a non-read time interval, in response to an active victim control signal. The main output drive circuit is responsive to the pair of periodic drive signals during the read time interval, and the victim output drive circuit is responsive to the active victim control signal during the non-read time interval.
1. An integrated circuit device, comprising:
a read strobe signal transmitter including a main output drive circuit and a victim output drive circuit having an output terminal electrically coupled to an output terminal of the main output drive circuit, said read strobe signal transmitter configured to generate a read strobe signal as: (i) a periodic signal during a read time interval, in response to a pair of periodic drive signals, which are in-phase with each other during the read time interval, and (ii) a disabled read strobe signal at a fixed logic level during a non-read time interval, in response to an active victim control signal.
2. The device of claim 1 , wherein the main output drive circuit is responsive to the pair of periodic drive signals during the read time interval; and wherein the victim output drive circuit is responsive to the active victim control signal during the non-read time interval.
3. The device of claim 2 , wherein the read strobe signal is generated at the output terminal of the main output drive circuit during the read time interval and at the output terminal of the victim output drive circuit during the non-read time interval.
4. The device of claim 3 , wherein the output terminal of the main output drive circuit is electrically shorted to the output terminal of the victim output drive circuit.
5. The device of claim 4 , wherein the victim output drive circuit comprises a MOS transistor having a gate terminal responsive to the active victim control signal during the non-read time interval.
6. The device of claim 4 , wherein the victim output drive circuit comprises a MOS transistor having a gate terminal responsive to the active victim control signal during the non-read time interval; and wherein the output terminal of the victim output drive circuit is the drain terminal of the MOS transistor.
7. The device of claim 6 , wherein the MOS transistor is selected from a group consisting of a PMOS pull-up transistor and an NMOS pull-down transistor.
8. The device of claim 2 , wherein the main output drive circuit comprises a PMOS pull-up transistor having a gate terminal responsive to a first one of the pair of periodic drive signals and an NMOS pull-down transistor having a gate terminal responsive to a second one of the pair of periodic drive signals.
9. The device of claim 5 , wherein the victim output drive circuit is disabled and the MOS transistor is disposed in a non-conductive state during the read time interval.
10. The device of claim 6 , wherein the victim output drive circuit is disabled and the MOS transistor is disposed in a non-conductive state during the read time interval.
11. An integrated circuit device, comprising:
a read strobe signal transmitter including a main output drive circuit and a victim output drive circuit, which has an output terminal electrically coupled to an output terminal of the main output drive circuit and is responsive to a victim control signal, said read strobe signal transmitter configured to generate a read strobe signal as: (i) a periodic signal during a read time interval when the victim control signal is inactive, and (ii) a disabled signal at a fixed logic level during a non-read time interval when the victim control signal is active.
12. The device of claim 11 , wherein the main output drive circuit is disabled when the victim control signal is active.
13. The device of claim 11 , wherein the victim output drive circuit is disabled when the victim control signal is inactive.
14. The device of claim 11 , wherein the main output drive circuit comprises: a PMOS pull-up transistor having a drain terminal electrically connected to the output terminal of the main output drive circuit; and an NMOS pull-down transistor having a drain terminal electrically connected to the output terminal of the main output drive circuit.
15. The device of claim 14 , wherein the main output drive circuit is responsive to a pair of periodic drive signals during the read time interval.
16. The device of claim 14 , wherein the victim output drive circuit comprises a MOS transistor having a drain terminal electrically coupled to the output terminal of the main output drive circuit.
17. The device of claim 15 , wherein the pair of periodic drive signals are in-phase with each other during the read time interval.
18. The device of claim 15 , wherein the main output drive circuit is responsive to a pair of drive signals during the non-read time interval; wherein the pair of drive signals includes a first drive signal that is held at a first logic level during the non-read time interval and a second drive signal that is held at a second logic level during the non-read time interval; and wherein the first and second logic levels are opposite logic levels.