TI380C60 Datasheet, PDF (8/15 Pages) Texas Instruments – CMOS TOKEN-RING INTERFACE DEVICE

TI380C60
CMOS TOKENĆRING INTERFACE DEVICE
SPWS015B − APRIL 1995 − REVISED OCTOBER 1996
disable and power-down mode (continued)
If PWRDN is taken low, all outputs are in the high-impedance state and all internal logic is powered down,
bringing power consumption to a very low level. Upon removing PWRDN, the device resets and initializes itself.
This process can take up to 2 ms and care should be taken to ensure that the system does not require stable
clocks during this period. In particular, slow-clock errors can be seen by a TI380C2x COMMprocessor in a
dual-physical-layer application if the TI380C60 is powered down when not in use.
test facilities
A 5-pin test port is included for production-device testing. While the signals are similar to ports defined by
IEEE-1149.1, this port is not compliant with the standard and the port is not suitable for in-circuit test.
ATEST gives access to the filter of the internal PLL. This pin is also for production test purposes, and no
connection should be made to it in an application.
absolute maximum ratings over operating case temperature range (unless otherwise noted)^†
Supply voltage range, V_DD (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.5 V to 7 V
Input voltage range (see Notes 2 and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.5 V to 7 V
Output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.5 V to 7 V
Power dissipation (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.75 W
ESD protection, V_ESD (see Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500 V
Junction-to-ambient package thermal impedance @ 0 LFPM air flow, Q_ja(0) . . . . . . . . . . . . . . . . . . 80.5°C/W
Junction-to-ambient package thermal impedance @ 100 LFPM air flow, Q_ja(100) . . . . . . . . . . . . . 64.9°C/W
Junction-to-case package thermal impedance, Q_jc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.9°C/W
Operating case temperature range, T_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 95°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 65°C to 150°C
† _{Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and}
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 2. All voltage values are with respect to VSS unless otherwise noted.
3. Inputs can be taken to more negative voltages if the current is limited to 20 mA.
4. Maximum power dissipation per package
5. The device is classified as ESDS class 1 (A:1500). ESD protection measured per MIL-STD-883C, Method 3015.
recommended operating conditions^‡
MIN NOM MAX
UNIT
VDD Supply voltage
All VDD
4.75
5
5.25
V
VIH High-level input voltage (see Note 6)
TTL inputs
2
VDD + 0.3 V
VIL Low-level input voltage (see Notes 6 and 7)
TTL inputs
− 0.3
0.8
V
VIB Receiver input bias voltage
See Note 8
VSB − 1
VSB + 1 V
IOH High-level output current (see Note 6)
TTL outputs
− 0.2
mA
IOL Low-level output current (see Note 6)
TTL outputs
2
mA
TC Operating case temperature range
0
95
°C
‡ _{Recommended operating conditions indicate the conditions that must be met to ensure that the device functions as intended and meets the}
detailed electrical specifications. Unless otherwise noted, all electrical specifications apply for all recommended operating conditions. Voltages
are measured with respect to the device VSS pins. Currents into the device are considered to be positive.
NOTES: 6. The TTL input and TTL output pins are identified in the pin functions table.
7. Inputs can be taken to more negative voltages if the IDD current is limited to 20 mA.
8. VSB is the self-bias voltage of the input pair RCV+ and RCV−. It is defined as VSB = (VSB+ +VSB _−) / 2 (where VSB+ is the self-bias
voltage of RCV+; VSB _− is the self-bias voltage of RCV−). The self-bias voltage of both pins is approximately VDD / 2.
8
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