Datasheet
IBM PowerPC 750GX RISC Microprocessor
DD1.X
3. Electrical and Thermal Characteristics
This section provides AC and DC electrical specifications and thermal characteristics for the 750GX.
3.1 DC Electrical Characteristics
The tables in this section describe the DC electrical characteristics for the 750GX.
Table 3-1. Absolute Maximum Ratings 1
Characteristic
Core supply voltage
PLL supply voltage
60x bus supply voltage
Input voltage
Symbol
1.8 V
2.5 V
3.3 V
Unit
V
Notes
3, 4
V
-0.3 to 1.6
-0.3 to 1.6
-0.3 to 2.0
-0.3 to 2.0
-55 to 150
-0.3 to 1.6
-0.3 to 1.6
-0.3 to 2.75
-0.3 to 2.75
-55 to 150
-0.3 to 1.6
-0.3 to 1.6
-0.3 to 3.7
-0.3 to 3.7
-55 to 150
DD
A1V , A2V
V
3, 4, 5
3, 4
DD
DD
OV
V
DD
V
V
2
IN
Storage temperature range
Notes:
T
°C
STG
1. Functional and tested operating conditions are given in Table 3-2 Recommended Operating Conditions. Absolute maximum rat-
ings are stress ratings only, and functional operation at the maximums is not guaranteed. Stresses beyond those listed above may
affect device reliability or cause permanent damage to the device.
2. Caution: Transient V overshoots of up to OV + 0.8 V, with a maximum of 4.0 V for 3.3 V operation, and undershoots down to
IN
DD
GND - 0.8 V, are allowed for up to 5 ns.
3. Caution: OV must not exceed V /AV by more than 2.5 V continuously. OV may exceed V /AV by up to 2.65 V for up
DD
DD
DD
DD
DD
DD
to 20 ms during power-on or power-off. OV must not exceed V /AV by more than 2.65 V for any amount of time.
DD
DD
DD
4. Caution: V /AV must not exceed OV by more than 1.0 V continuously. V /AV may exceed OV by up to 1.6 V for up
DD
DD
DD
DD
DD
DD
to 20 ms during power-on or power-off. V /AV must not exceed OV by more than 1.6 V for any amount of time.
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DD
DD
5. Caution: AV must not exceed V by more than 0.5 V at any time.
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DD
Table 3-2. Recommended Operating Conditions
Characteristic
Core supply voltage (733 MHz–800 MHz)
Core supply voltage (933 MHz–1.0 GHz)
PLL supply voltage (733 MHz–800 MHz)
PLL supply voltage (933 MHz–1.0 GHz)
60× bus supply voltage (1.8 V)
60× bus supply voltage (2.5 V)
60× bus supply voltage (3.3 V)
Input voltage
Symbol
Value
Unit
V
Notes
1, 2, 4
1, 2
1, 3, 4
1, 3
2
V
V
1.4 to 1.5
DD
DD
1.45 to 1.55
1.4 to 1.5
V
AV
AV
OV
OV
OV
V
DD
DD
DD
DD
DD
IN
1.45 to 1.55
1.7 to 1.9
V
V
2.375 to 2.625
3.135 to 3.465
V
2
V
2
V
GND to OV
V
2
DD
Die-junction temperature
T
-40 to 105
°C
J
Notes:
1. Lower core voltages are supported to allow slower operation at substantial power savings.
2. These are recommended and tested operating conditions. Proper device operation outside of these conditions is not guaranteed.
3. AV should be set to the same value as V for single PLL operation.
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4. Operation with Vdd up to 1.55V is supported, but the power dissipation will increase.
750GX_ds_body.fm SA14-2765-02
September 2, 2005
Electrical and Thermal Characteristics
Page 15 of 73
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